AnalysisDeclContext.cpp revision 75f8bd01319000b3e1438847505302670514759d
11d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek//== AnalysisDeclContext.cpp - Analysis context for Path Sens analysis -*- C++ -*-// 297ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu// 397ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu// The LLVM Compiler Infrastructure 497ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu// 597ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu// This file is distributed under the University of Illinois Open Source 697ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu// License. See LICENSE.TXT for details. 797ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu// 897ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu//===----------------------------------------------------------------------===// 997ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu// 101d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek// This file defines AnalysisDeclContext, a class that manages the analysis context 1197ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu// data for path sensitive analysis. 1297ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu// 1397ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu//===----------------------------------------------------------------------===// 1497ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu 1555fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Analysis/AnalysisContext.h" 1655fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "BodyFarm.h" 17471c8b49982d1132f30b0b0da27fef94fd6e4f67Benjamin Kramer#include "clang/AST/ASTContext.h" 1897ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu#include "clang/AST/Decl.h" 1997ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu#include "clang/AST/DeclObjC.h" 20fa6ef180c0d3609124217387618fbb51bbdd2e48Mike Stump#include "clang/AST/DeclTemplate.h" 2197ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu#include "clang/AST/ParentMap.h" 22b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek#include "clang/AST/StmtVisitor.h" 2355fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Analysis/Analyses/CFGReachabilityAnalysis.h" 242cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek#include "clang/Analysis/Analyses/LiveVariables.h" 25db34ab70961ca4b24b600eb47053d7af304659f5Tom Care#include "clang/Analysis/Analyses/PseudoConstantAnalysis.h" 262cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek#include "clang/Analysis/CFG.h" 27283a358aecb75e30fcd486f2206f6c03c5e7f11dTed Kremenek#include "clang/Analysis/CFGStmtMap.h" 28b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek#include "clang/Analysis/Support/BumpVector.h" 299b20a90dff2ed605153c68a5c58b6aadcdb0952bBenjamin Kramer#include "llvm/ADT/SmallPtrSet.h" 3087a05f1fe8ae14044f182b015b279e0a6f4cbdd1Mike Stump#include "llvm/Support/ErrorHandling.h" 3175f8bd01319000b3e1438847505302670514759dJordan Rose#include "llvm/Support/raw_ostream.h" 3255fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "llvm/Support/SaveAndRestore.h" 33a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek 3497ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xuusing namespace clang; 3597ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu 36a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenektypedef llvm::DenseMap<const void *, ManagedAnalysis *> ManagedAnalysisMap; 37a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek 381d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekAnalysisDeclContext::AnalysisDeclContext(AnalysisDeclContextManager *Mgr, 39a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek const Decl *d, 40a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek const CFG::BuildOptions &buildOptions) 41b1b5daf30d2597e066936772bd206500232d7d65Ted Kremenek : Manager(Mgr), 42b1b5daf30d2597e066936772bd206500232d7d65Ted Kremenek D(d), 43bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek cfgBuildOptions(buildOptions), 44b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek forcedBlkExprs(0), 45bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek builtCFG(false), 46bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek builtCompleteCFG(false), 47a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek ReferencedBlockVars(0), 48a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek ManagedAnalyses(0) 49bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek{ 50b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek cfgBuildOptions.forcedBlkExprs = &forcedBlkExprs; 51bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek} 52bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek 531d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekAnalysisDeclContext::AnalysisDeclContext(AnalysisDeclContextManager *Mgr, 54a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek const Decl *d) 55b1b5daf30d2597e066936772bd206500232d7d65Ted Kremenek: Manager(Mgr), 56b1b5daf30d2597e066936772bd206500232d7d65Ted Kremenek D(d), 57bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek forcedBlkExprs(0), 58bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek builtCFG(false), 59bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek builtCompleteCFG(false), 60a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek ReferencedBlockVars(0), 61a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek ManagedAnalyses(0) 62bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek{ 63bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek cfgBuildOptions.forcedBlkExprs = &forcedBlkExprs; 64bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek} 65bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek 661d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekAnalysisDeclContextManager::AnalysisDeclContextManager(bool useUnoptimizedCFG, 675a1ffe98b04120846a15f7105905b5f363b08635Jordan Rose bool addImplicitDtors, 685a1ffe98b04120846a15f7105905b5f363b08635Jordan Rose bool addInitializers, 69a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek bool addTemporaryDtors, 7002a88c3edf1aeb9580e0b6e444b30c52846a673cTed Kremenek bool synthesizeBodies, 7102a88c3edf1aeb9580e0b6e444b30c52846a673cTed Kremenek bool addStaticInitBranch) 72a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek : SynthesizeBodies(synthesizeBodies) 73a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek{ 74bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek cfgBuildOptions.PruneTriviallyFalseEdges = !useUnoptimizedCFG; 75b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek cfgBuildOptions.AddImplicitDtors = addImplicitDtors; 76b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek cfgBuildOptions.AddInitializers = addInitializers; 775a1ffe98b04120846a15f7105905b5f363b08635Jordan Rose cfgBuildOptions.AddTemporaryDtors = addTemporaryDtors; 7802a88c3edf1aeb9580e0b6e444b30c52846a673cTed Kremenek cfgBuildOptions.AddStaticInitBranches = addStaticInitBranch; 79b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek} 80b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek 811d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenekvoid AnalysisDeclContextManager::clear() { 8258f5ec7d56b1ebf5f90ee11226ebe7663f2821eaTed Kremenek for (ContextMap::iterator I = Contexts.begin(), E = Contexts.end(); I!=E; ++I) 8358f5ec7d56b1ebf5f90ee11226ebe7663f2821eaTed Kremenek delete I->second; 8458f5ec7d56b1ebf5f90ee11226ebe7663f2821eaTed Kremenek Contexts.clear(); 8558f5ec7d56b1ebf5f90ee11226ebe7663f2821eaTed Kremenek} 8658f5ec7d56b1ebf5f90ee11226ebe7663f2821eaTed Kremenek 87a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenekstatic BodyFarm &getBodyFarm(ASTContext &C) { 88a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek static BodyFarm *BF = new BodyFarm(C); 89a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek return *BF; 90a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek} 91a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek 92453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna ZaksStmt *AnalysisDeclContext::getBody(bool &IsAutosynthesized) const { 9322c0cbee5bb2150841e0046354fd37ba22de747aNAKAMURA Takumi IsAutosynthesized = false; 94a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 95a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek Stmt *Body = FD->getBody(); 96453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna Zaks if (!Body && Manager && Manager->synthesizeBodies()) { 97453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna Zaks IsAutosynthesized = true; 98a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek return getBodyFarm(getASTContext()).getBody(FD); 99453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna Zaks } 100a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek return Body; 101a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek } 1022376002038c8b904acd20be754aedd1a7471be71Ted Kremenek else if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) 10397ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu return MD->getBody(); 10430a45344c827a8346f6ecfda56b7811d1e031767Ted Kremenek else if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) 10530a45344c827a8346f6ecfda56b7811d1e031767Ted Kremenek return BD->getBody(); 106fa6ef180c0d3609124217387618fbb51bbdd2e48Mike Stump else if (const FunctionTemplateDecl *FunTmpl 107fa6ef180c0d3609124217387618fbb51bbdd2e48Mike Stump = dyn_cast_or_null<FunctionTemplateDecl>(D)) 108fa6ef180c0d3609124217387618fbb51bbdd2e48Mike Stump return FunTmpl->getTemplatedDecl()->getBody(); 10997ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu 1109f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("unknown code decl"); 11197ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu} 11297ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu 113453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna ZaksStmt *AnalysisDeclContext::getBody() const { 114453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna Zaks bool Tmp; 115453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna Zaks return getBody(Tmp); 116453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna Zaks} 117453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna Zaks 118453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna Zaksbool AnalysisDeclContext::isBodyAutosynthesized() const { 119453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna Zaks bool Tmp; 120453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna Zaks getBody(Tmp); 121453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna Zaks return Tmp; 122453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna Zaks} 123453cb859a3c8dcafe79ae840dfc35ff8eae1b4b3Anna Zaks 1241d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenekconst ImplicitParamDecl *AnalysisDeclContext::getSelfDecl() const { 12582cd37cf1cccde162d1f13eda6cdfe1398216f36Ted Kremenek if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) 12682cd37cf1cccde162d1f13eda6cdfe1398216f36Ted Kremenek return MD->getSelfDecl(); 127ccf1bfde160c03c677ba530c9dcb77365a9c2d7bTed Kremenek if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) { 128ccf1bfde160c03c677ba530c9dcb77365a9c2d7bTed Kremenek // See if 'self' was captured by the block. 129ccf1bfde160c03c677ba530c9dcb77365a9c2d7bTed Kremenek for (BlockDecl::capture_const_iterator it = BD->capture_begin(), 130ccf1bfde160c03c677ba530c9dcb77365a9c2d7bTed Kremenek et = BD->capture_end(); it != et; ++it) { 131ccf1bfde160c03c677ba530c9dcb77365a9c2d7bTed Kremenek const VarDecl *VD = it->getVariable(); 132ccf1bfde160c03c677ba530c9dcb77365a9c2d7bTed Kremenek if (VD->getName() == "self") 133ccf1bfde160c03c677ba530c9dcb77365a9c2d7bTed Kremenek return dyn_cast<ImplicitParamDecl>(VD); 134ccf1bfde160c03c677ba530c9dcb77365a9c2d7bTed Kremenek } 135ccf1bfde160c03c677ba530c9dcb77365a9c2d7bTed Kremenek } 1361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13782cd37cf1cccde162d1f13eda6cdfe1398216f36Ted Kremenek return NULL; 13882cd37cf1cccde162d1f13eda6cdfe1398216f36Ted Kremenek} 13982cd37cf1cccde162d1f13eda6cdfe1398216f36Ted Kremenek 1401d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenekvoid AnalysisDeclContext::registerForcedBlockExpression(const Stmt *stmt) { 1410d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek if (!forcedBlkExprs) 1420d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek forcedBlkExprs = new CFG::BuildOptions::ForcedBlkExprs(); 1430d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek // Default construct an entry for 'stmt'. 144ac73ea8c12772fd0dcec71b83c193a2837de7f8bJordy Rose if (const Expr *e = dyn_cast<Expr>(stmt)) 145ac73ea8c12772fd0dcec71b83c193a2837de7f8bJordy Rose stmt = e->IgnoreParens(); 1460d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek (void) (*forcedBlkExprs)[stmt]; 1470d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek} 1480d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek 1490d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenekconst CFGBlock * 1501d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekAnalysisDeclContext::getBlockForRegisteredExpression(const Stmt *stmt) { 1510d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek assert(forcedBlkExprs); 152ac73ea8c12772fd0dcec71b83c193a2837de7f8bJordy Rose if (const Expr *e = dyn_cast<Expr>(stmt)) 153ac73ea8c12772fd0dcec71b83c193a2837de7f8bJordy Rose stmt = e->IgnoreParens(); 1540d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek CFG::BuildOptions::ForcedBlkExprs::const_iterator itr = 1550d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek forcedBlkExprs->find(stmt); 1560d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek assert(itr != forcedBlkExprs->end()); 1570d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek return itr->second; 1580d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek} 1590d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek 1601d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekCFG *AnalysisDeclContext::getCFG() { 161bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek if (!cfgBuildOptions.PruneTriviallyFalseEdges) 1629b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek return getUnoptimizedCFG(); 1639b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek 164d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek if (!builtCFG) { 165b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek cfg.reset(CFG::buildCFG(D, getBody(), 166b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek &D->getASTContext(), cfgBuildOptions)); 167d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek // Even when the cfg is not successfully built, we don't 168d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek // want to try building it again. 169d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek builtCFG = true; 170d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek } 171b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek return cfg.get(); 17297ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu} 17397ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu 1741d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekCFG *AnalysisDeclContext::getUnoptimizedCFG() { 175ad5a894df1841698c824381b414630799adc26caTed Kremenek if (!builtCompleteCFG) { 176bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek SaveAndRestore<bool> NotPrune(cfgBuildOptions.PruneTriviallyFalseEdges, 177bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek false); 178bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek completeCFG.reset(CFG::buildCFG(D, getBody(), &D->getASTContext(), 179bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek cfgBuildOptions)); 180ad5a894df1841698c824381b414630799adc26caTed Kremenek // Even when the cfg is not successfully built, we don't 181ad5a894df1841698c824381b414630799adc26caTed Kremenek // want to try building it again. 182ad5a894df1841698c824381b414630799adc26caTed Kremenek builtCompleteCFG = true; 183ad5a894df1841698c824381b414630799adc26caTed Kremenek } 184b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek return completeCFG.get(); 185ad5a894df1841698c824381b414630799adc26caTed Kremenek} 186ad5a894df1841698c824381b414630799adc26caTed Kremenek 1871d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekCFGStmtMap *AnalysisDeclContext::getCFGStmtMap() { 188283a358aecb75e30fcd486f2206f6c03c5e7f11dTed Kremenek if (cfgStmtMap) 189b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek return cfgStmtMap.get(); 190283a358aecb75e30fcd486f2206f6c03c5e7f11dTed Kremenek 191283a358aecb75e30fcd486f2206f6c03c5e7f11dTed Kremenek if (CFG *c = getCFG()) { 192b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek cfgStmtMap.reset(CFGStmtMap::Build(c, &getParentMap())); 193b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek return cfgStmtMap.get(); 194283a358aecb75e30fcd486f2206f6c03c5e7f11dTed Kremenek } 195283a358aecb75e30fcd486f2206f6c03c5e7f11dTed Kremenek 196283a358aecb75e30fcd486f2206f6c03c5e7f11dTed Kremenek return 0; 197283a358aecb75e30fcd486f2206f6c03c5e7f11dTed Kremenek} 19842461eecee98fff3671b3c14ce10f1a9e18cc95cTed Kremenek 1991d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekCFGReverseBlockReachabilityAnalysis *AnalysisDeclContext::getCFGReachablityAnalysis() { 20042461eecee98fff3671b3c14ce10f1a9e18cc95cTed Kremenek if (CFA) 201b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek return CFA.get(); 20242461eecee98fff3671b3c14ce10f1a9e18cc95cTed Kremenek 20342461eecee98fff3671b3c14ce10f1a9e18cc95cTed Kremenek if (CFG *c = getCFG()) { 204af13d5b25b360e698cc1cf1055ad7d14e008e505Ted Kremenek CFA.reset(new CFGReverseBlockReachabilityAnalysis(*c)); 205b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek return CFA.get(); 20642461eecee98fff3671b3c14ce10f1a9e18cc95cTed Kremenek } 207283a358aecb75e30fcd486f2206f6c03c5e7f11dTed Kremenek 20842461eecee98fff3671b3c14ce10f1a9e18cc95cTed Kremenek return 0; 20942461eecee98fff3671b3c14ce10f1a9e18cc95cTed Kremenek} 210283a358aecb75e30fcd486f2206f6c03c5e7f11dTed Kremenek 211682060c5d95f6e4f79536013781ab0870cdd3850Ted Kremenekvoid AnalysisDeclContext::dumpCFG(bool ShowColors) { 2124e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie getCFG()->dump(getASTContext().getLangOpts(), ShowColors); 21304eeba43040969c05cfcb563195ef5b199297b62Anders Carlsson} 21404eeba43040969c05cfcb563195ef5b199297b62Anders Carlsson 2151d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekParentMap &AnalysisDeclContext::getParentMap() { 2161d3ca251f9891623fac0dbe70eece42564e274edJordan Rose if (!PM) { 217b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek PM.reset(new ParentMap(getBody())); 2181d3ca251f9891623fac0dbe70eece42564e274edJordan Rose if (const CXXConstructorDecl *C = dyn_cast<CXXConstructorDecl>(getDecl())) { 2191d3ca251f9891623fac0dbe70eece42564e274edJordan Rose for (CXXConstructorDecl::init_const_iterator I = C->init_begin(), 2201d3ca251f9891623fac0dbe70eece42564e274edJordan Rose E = C->init_end(); 2211d3ca251f9891623fac0dbe70eece42564e274edJordan Rose I != E; ++I) { 2221d3ca251f9891623fac0dbe70eece42564e274edJordan Rose PM->addStmt((*I)->getInit()); 2231d3ca251f9891623fac0dbe70eece42564e274edJordan Rose } 2241d3ca251f9891623fac0dbe70eece42564e274edJordan Rose } 2251d3ca251f9891623fac0dbe70eece42564e274edJordan Rose } 22697ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu return *PM; 22797ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu} 22897ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu 2291d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekPseudoConstantAnalysis *AnalysisDeclContext::getPseudoConstantAnalysis() { 230245adabd97c8c770c13935a9075f2243cc6f1d57Tom Care if (!PCA) 231b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek PCA.reset(new PseudoConstantAnalysis(getBody())); 232b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek return PCA.get(); 233245adabd97c8c770c13935a9075f2243cc6f1d57Tom Care} 234245adabd97c8c770c13935a9075f2243cc6f1d57Tom Care 235d200187bd27f9ad68699693a6e57f9ee3ff260faJordy RoseAnalysisDeclContext *AnalysisDeclContextManager::getContext(const Decl *D) { 236a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 23781d18bf944bd885c48b693c2c8c651607001ad9dTed Kremenek // Calling 'hasBody' replaces 'FD' in place with the FunctionDecl 23881d18bf944bd885c48b693c2c8c651607001ad9dTed Kremenek // that has the body. 239a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek FD->hasBody(FD); 240a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek D = FD; 241a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek } 242a43df9539644bf1c258e12710cd69d79b0b078cdTed Kremenek 2431d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContext *&AC = Contexts[D]; 2442376002038c8b904acd20be754aedd1a7471be71Ted Kremenek if (!AC) 245d200187bd27f9ad68699693a6e57f9ee3ff260faJordy Rose AC = new AnalysisDeclContext(this, D, cfgBuildOptions); 2462376002038c8b904acd20be754aedd1a7471be71Ted Kremenek return AC; 24797ab3941effe1f508c7113d9aa0c2887774f6fa8Zhongxing Xu} 24818c7c06033cafe8c0cdcbe5759c802728688b49fZhongxing Xu 249b1b5daf30d2597e066936772bd206500232d7d65Ted Kremenekconst StackFrameContext * 2501d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekAnalysisDeclContext::getStackFrame(LocationContext const *Parent, const Stmt *S, 251b1b5daf30d2597e066936772bd206500232d7d65Ted Kremenek const CFGBlock *Blk, unsigned Idx) { 252b1b5daf30d2597e066936772bd206500232d7d65Ted Kremenek return getLocationContextManager().getStackFrame(this, Parent, S, Blk, Idx); 253b1b5daf30d2597e066936772bd206500232d7d65Ted Kremenek} 254b1b5daf30d2597e066936772bd206500232d7d65Ted Kremenek 2557fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenekconst BlockInvocationContext * 2567fa9b4f258636d89342eda28f21a986c8ac353b1Ted KremenekAnalysisDeclContext::getBlockInvocationContext(const LocationContext *parent, 2577fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek const clang::BlockDecl *BD, 2587fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek const void *ContextData) { 2597fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek return getLocationContextManager().getBlockInvocationContext(this, parent, 2607fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek BD, ContextData); 2617fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek} 2627fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek 2631d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekLocationContextManager & AnalysisDeclContext::getLocationContextManager() { 264b1b5daf30d2597e066936772bd206500232d7d65Ted Kremenek assert(Manager && 2651d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek "Cannot create LocationContexts without an AnalysisDeclContextManager!"); 266b1b5daf30d2597e066936772bd206500232d7d65Ted Kremenek return Manager->getLocationContextManager(); 267b1b5daf30d2597e066936772bd206500232d7d65Ted Kremenek} 268b1b5daf30d2597e066936772bd206500232d7d65Ted Kremenek 269dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek//===----------------------------------------------------------------------===// 270dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek// FoldingSet profiling. 271dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek//===----------------------------------------------------------------------===// 272dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek 273dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenekvoid LocationContext::ProfileCommon(llvm::FoldingSetNodeID &ID, 274dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek ContextKind ck, 2751d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContext *ctx, 276dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek const LocationContext *parent, 2779c378f705405d37f49795d5e915989de774fe11fTed Kremenek const void *data) { 2780ee4124012950d7bb853438629b8e7652febf183Ted Kremenek ID.AddInteger(ck); 2790ee4124012950d7bb853438629b8e7652febf183Ted Kremenek ID.AddPointer(ctx); 2800ee4124012950d7bb853438629b8e7652febf183Ted Kremenek ID.AddPointer(parent); 281dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek ID.AddPointer(data); 282dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek} 283dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek 284dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenekvoid StackFrameContext::Profile(llvm::FoldingSetNodeID &ID) { 2851d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek Profile(ID, getAnalysisDeclContext(), getParent(), CallSite, Block, Index); 28618c7c06033cafe8c0cdcbe5759c802728688b49fZhongxing Xu} 28718c7c06033cafe8c0cdcbe5759c802728688b49fZhongxing Xu 288dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenekvoid ScopeContext::Profile(llvm::FoldingSetNodeID &ID) { 2891d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek Profile(ID, getAnalysisDeclContext(), getParent(), Enter); 29018c7c06033cafe8c0cdcbe5759c802728688b49fZhongxing Xu} 29118c7c06033cafe8c0cdcbe5759c802728688b49fZhongxing Xu 292dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenekvoid BlockInvocationContext::Profile(llvm::FoldingSetNodeID &ID) { 2937fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek Profile(ID, getAnalysisDeclContext(), getParent(), BD, ContextData); 294dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek} 295dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek 296dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek//===----------------------------------------------------------------------===// 2970ee4124012950d7bb853438629b8e7652febf183Ted Kremenek// LocationContext creation. 298dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek//===----------------------------------------------------------------------===// 299dc0d909f0f6684159c8475db1a15967e5613cb27Ted Kremenek 3000ee4124012950d7bb853438629b8e7652febf183Ted Kremenektemplate <typename LOC, typename DATA> 3010ee4124012950d7bb853438629b8e7652febf183Ted Kremenekconst LOC* 3021d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekLocationContextManager::getLocationContext(AnalysisDeclContext *ctx, 3030ee4124012950d7bb853438629b8e7652febf183Ted Kremenek const LocationContext *parent, 3040ee4124012950d7bb853438629b8e7652febf183Ted Kremenek const DATA *d) { 3050ee4124012950d7bb853438629b8e7652febf183Ted Kremenek llvm::FoldingSetNodeID ID; 3060ee4124012950d7bb853438629b8e7652febf183Ted Kremenek LOC::Profile(ID, ctx, parent, d); 3070ee4124012950d7bb853438629b8e7652febf183Ted Kremenek void *InsertPos; 308d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 3090ee4124012950d7bb853438629b8e7652febf183Ted Kremenek LOC *L = cast_or_null<LOC>(Contexts.FindNodeOrInsertPos(ID, InsertPos)); 310d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 3110ee4124012950d7bb853438629b8e7652febf183Ted Kremenek if (!L) { 3120ee4124012950d7bb853438629b8e7652febf183Ted Kremenek L = new LOC(ctx, parent, d); 3130ee4124012950d7bb853438629b8e7652febf183Ted Kremenek Contexts.InsertNode(L, InsertPos); 3140ee4124012950d7bb853438629b8e7652febf183Ted Kremenek } 3150ee4124012950d7bb853438629b8e7652febf183Ted Kremenek return L; 31658f5ec7d56b1ebf5f90ee11226ebe7663f2821eaTed Kremenek} 31758f5ec7d56b1ebf5f90ee11226ebe7663f2821eaTed Kremenek 3180ee4124012950d7bb853438629b8e7652febf183Ted Kremenekconst StackFrameContext* 3191d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekLocationContextManager::getStackFrame(AnalysisDeclContext *ctx, 32054c809b19444a01444f36e93d1d28c9a5668484cTed Kremenek const LocationContext *parent, 321892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek const Stmt *s, 322d706434b0231c76fd9acf30060646a7aa8f69aefZhongxing Xu const CFGBlock *blk, unsigned idx) { 32362d399e1880aacd9dc494fce374245b0da915adaZhongxing Xu llvm::FoldingSetNodeID ID; 324892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek StackFrameContext::Profile(ID, ctx, parent, s, blk, idx); 32562d399e1880aacd9dc494fce374245b0da915adaZhongxing Xu void *InsertPos; 326d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek StackFrameContext *L = 32762d399e1880aacd9dc494fce374245b0da915adaZhongxing Xu cast_or_null<StackFrameContext>(Contexts.FindNodeOrInsertPos(ID, InsertPos)); 32862d399e1880aacd9dc494fce374245b0da915adaZhongxing Xu if (!L) { 329892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek L = new StackFrameContext(ctx, parent, s, blk, idx); 33062d399e1880aacd9dc494fce374245b0da915adaZhongxing Xu Contexts.InsertNode(L, InsertPos); 33162d399e1880aacd9dc494fce374245b0da915adaZhongxing Xu } 33262d399e1880aacd9dc494fce374245b0da915adaZhongxing Xu return L; 33318c7c06033cafe8c0cdcbe5759c802728688b49fZhongxing Xu} 33418c7c06033cafe8c0cdcbe5759c802728688b49fZhongxing Xu 3350ee4124012950d7bb853438629b8e7652febf183Ted Kremenekconst ScopeContext * 3361d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekLocationContextManager::getScope(AnalysisDeclContext *ctx, 3370ee4124012950d7bb853438629b8e7652febf183Ted Kremenek const LocationContext *parent, 3380ee4124012950d7bb853438629b8e7652febf183Ted Kremenek const Stmt *s) { 3390ee4124012950d7bb853438629b8e7652febf183Ted Kremenek return getLocationContext<ScopeContext, Stmt>(ctx, parent, s); 3400ee4124012950d7bb853438629b8e7652febf183Ted Kremenek} 34118c7c06033cafe8c0cdcbe5759c802728688b49fZhongxing Xu 3427fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenekconst BlockInvocationContext * 3437fa9b4f258636d89342eda28f21a986c8ac353b1Ted KremenekLocationContextManager::getBlockInvocationContext(AnalysisDeclContext *ctx, 3447fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek const LocationContext *parent, 3457fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek const BlockDecl *BD, 3467fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek const void *ContextData) { 3477fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek llvm::FoldingSetNodeID ID; 3487fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek BlockInvocationContext::Profile(ID, ctx, parent, BD, ContextData); 3497fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek void *InsertPos; 3507fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek BlockInvocationContext *L = 3517fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek cast_or_null<BlockInvocationContext>(Contexts.FindNodeOrInsertPos(ID, 3527fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek InsertPos)); 3537fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek if (!L) { 3547fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek L = new BlockInvocationContext(ctx, parent, BD, ContextData); 3557fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek Contexts.InsertNode(L, InsertPos); 3567fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek } 3577fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek return L; 3587fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek} 3597fa9b4f258636d89342eda28f21a986c8ac353b1Ted Kremenek 360b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek//===----------------------------------------------------------------------===// 36167d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek// LocationContext methods. 36267d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek//===----------------------------------------------------------------------===// 36367d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek 36467d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenekconst StackFrameContext *LocationContext::getCurrentStackFrame() const { 36567d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek const LocationContext *LC = this; 36667d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek while (LC) { 36767d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek if (const StackFrameContext *SFC = dyn_cast<StackFrameContext>(LC)) 36867d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek return SFC; 36967d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek LC = LC->getParent(); 37067d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek } 37167d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek return NULL; 37267d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek} 37367d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek 374fadcd5d5bbe1bfc1c6b8d819cc2242f780a49fecAnna Zaksbool LocationContext::inTopFrame() const { 375fadcd5d5bbe1bfc1c6b8d819cc2242f780a49fecAnna Zaks return getCurrentStackFrame()->inTopFrame(); 376fadcd5d5bbe1bfc1c6b8d819cc2242f780a49fecAnna Zaks} 377fadcd5d5bbe1bfc1c6b8d819cc2242f780a49fecAnna Zaks 3788ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xubool LocationContext::isParentOf(const LocationContext *LC) const { 3798ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu do { 3808ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu const LocationContext *Parent = LC->getParent(); 3818ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu if (Parent == this) 3828ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu return true; 3838ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu else 3848ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu LC = Parent; 3858ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu } while (LC); 3868ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu 3878ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu return false; 3888ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu} 3898ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu 39075f8bd01319000b3e1438847505302670514759dJordan Rosevoid LocationContext::dumpStack() const { 39175f8bd01319000b3e1438847505302670514759dJordan Rose ASTContext &Ctx = getAnalysisDeclContext()->getASTContext(); 39275f8bd01319000b3e1438847505302670514759dJordan Rose PrintingPolicy PP(Ctx.getLangOpts()); 39375f8bd01319000b3e1438847505302670514759dJordan Rose PP.TerseOutput = 1; 39475f8bd01319000b3e1438847505302670514759dJordan Rose 39575f8bd01319000b3e1438847505302670514759dJordan Rose unsigned Frame = 0; 39675f8bd01319000b3e1438847505302670514759dJordan Rose for (const LocationContext *LCtx = this; LCtx; LCtx = LCtx->getParent()) { 39775f8bd01319000b3e1438847505302670514759dJordan Rose switch (LCtx->getKind()) { 39875f8bd01319000b3e1438847505302670514759dJordan Rose case StackFrame: 39975f8bd01319000b3e1438847505302670514759dJordan Rose llvm::errs() << '#' << Frame++ << ' '; 40075f8bd01319000b3e1438847505302670514759dJordan Rose cast<StackFrameContext>(LCtx)->getDecl()->print(llvm::errs(), PP); 40175f8bd01319000b3e1438847505302670514759dJordan Rose llvm::errs() << '\n'; 40275f8bd01319000b3e1438847505302670514759dJordan Rose break; 40375f8bd01319000b3e1438847505302670514759dJordan Rose case Scope: 40475f8bd01319000b3e1438847505302670514759dJordan Rose llvm::errs() << " (scope)\n"; 40575f8bd01319000b3e1438847505302670514759dJordan Rose break; 40675f8bd01319000b3e1438847505302670514759dJordan Rose case Block: 40775f8bd01319000b3e1438847505302670514759dJordan Rose llvm::errs() << " (block context: " 40875f8bd01319000b3e1438847505302670514759dJordan Rose << cast<BlockInvocationContext>(LCtx)->getContextData() 40975f8bd01319000b3e1438847505302670514759dJordan Rose << ")\n"; 41075f8bd01319000b3e1438847505302670514759dJordan Rose break; 41175f8bd01319000b3e1438847505302670514759dJordan Rose } 41275f8bd01319000b3e1438847505302670514759dJordan Rose } 41375f8bd01319000b3e1438847505302670514759dJordan Rose} 41475f8bd01319000b3e1438847505302670514759dJordan Rose 41567d1287035767f4f6c8ca0c2bb755990012a44caTed Kremenek//===----------------------------------------------------------------------===// 416b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek// Lazily generated map to query the external variables referenced by a Block. 417b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek//===----------------------------------------------------------------------===// 418b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek 419b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremeneknamespace { 420b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenekclass FindBlockDeclRefExprsVals : public StmtVisitor<FindBlockDeclRefExprsVals>{ 421b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek BumpVector<const VarDecl*> &BEVals; 422b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek BumpVectorContext &BC; 4239b20a90dff2ed605153c68a5c58b6aadcdb0952bBenjamin Kramer llvm::SmallPtrSet<const VarDecl*, 4> Visited; 4249b20a90dff2ed605153c68a5c58b6aadcdb0952bBenjamin Kramer llvm::SmallPtrSet<const DeclContext*, 4> IgnoredContexts; 425b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenekpublic: 426b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek FindBlockDeclRefExprsVals(BumpVector<const VarDecl*> &bevals, 427b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek BumpVectorContext &bc) 428b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek : BEVals(bevals), BC(bc) {} 4292cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek 4302cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek bool IsTrackedDecl(const VarDecl *VD) { 4312cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek const DeclContext *DC = VD->getDeclContext(); 4322cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek return IgnoredContexts.count(DC) == 0; 4332cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek } 4342cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek 435b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek void VisitStmt(Stmt *S) { 4367502c1d3ce8bb97bcc4f7bebef507040bd93b26fJohn McCall for (Stmt::child_range I = S->children(); I; ++I) 437b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek if (Stmt *child = *I) 438b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek Visit(child); 439b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek } 44085248734f404fbb9b2f88ecd5296761a8578def6Ted Kremenek 44115ce164836472bfba88b30e53aa3f6ac0fb8a95dTed Kremenek void VisitDeclRefExpr(DeclRefExpr *DR) { 44285248734f404fbb9b2f88ecd5296761a8578def6Ted Kremenek // Non-local variables are also directly modified. 4439b20a90dff2ed605153c68a5c58b6aadcdb0952bBenjamin Kramer if (const VarDecl *VD = dyn_cast<VarDecl>(DR->getDecl())) { 44485248734f404fbb9b2f88ecd5296761a8578def6Ted Kremenek if (!VD->hasLocalStorage()) { 4459b20a90dff2ed605153c68a5c58b6aadcdb0952bBenjamin Kramer if (Visited.insert(VD)) 44685248734f404fbb9b2f88ecd5296761a8578def6Ted Kremenek BEVals.push_back(VD, BC); 44785248734f404fbb9b2f88ecd5296761a8578def6Ted Kremenek } 4489b20a90dff2ed605153c68a5c58b6aadcdb0952bBenjamin Kramer } 44985248734f404fbb9b2f88ecd5296761a8578def6Ted Kremenek } 4502cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek 4512cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek void VisitBlockExpr(BlockExpr *BR) { 4522cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek // Blocks containing blocks can transitively capture more variables. 4532cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek IgnoredContexts.insert(BR->getBlockDecl()); 4542cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek Visit(BR->getBlockDecl()->getBody()); 4552cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek } 45615ce164836472bfba88b30e53aa3f6ac0fb8a95dTed Kremenek 45715ce164836472bfba88b30e53aa3f6ac0fb8a95dTed Kremenek void VisitPseudoObjectExpr(PseudoObjectExpr *PE) { 45815ce164836472bfba88b30e53aa3f6ac0fb8a95dTed Kremenek for (PseudoObjectExpr::semantics_iterator it = PE->semantics_begin(), 45915ce164836472bfba88b30e53aa3f6ac0fb8a95dTed Kremenek et = PE->semantics_end(); it != et; ++it) { 46015ce164836472bfba88b30e53aa3f6ac0fb8a95dTed Kremenek Expr *Semantic = *it; 46115ce164836472bfba88b30e53aa3f6ac0fb8a95dTed Kremenek if (OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(Semantic)) 46215ce164836472bfba88b30e53aa3f6ac0fb8a95dTed Kremenek Semantic = OVE->getSourceExpr(); 46315ce164836472bfba88b30e53aa3f6ac0fb8a95dTed Kremenek Visit(Semantic); 46415ce164836472bfba88b30e53aa3f6ac0fb8a95dTed Kremenek } 46515ce164836472bfba88b30e53aa3f6ac0fb8a95dTed Kremenek } 466d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek}; 467b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek} // end anonymous namespace 468b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek 469b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenektypedef BumpVector<const VarDecl*> DeclVec; 470b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek 471b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenekstatic DeclVec* LazyInitializeReferencedDecls(const BlockDecl *BD, 472b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek void *&Vec, 473b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek llvm::BumpPtrAllocator &A) { 474b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek if (Vec) 475b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek return (DeclVec*) Vec; 476d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 477b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek BumpVectorContext BC(A); 478b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek DeclVec *BV = (DeclVec*) A.Allocate<DeclVec>(); 479b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek new (BV) DeclVec(BC, 10); 480d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 481b929f6636c79565e9a34c0656a962f9b198c5e80Ted Kremenek // Go through the capture list. 482b929f6636c79565e9a34c0656a962f9b198c5e80Ted Kremenek for (BlockDecl::capture_const_iterator CI = BD->capture_begin(), 483b929f6636c79565e9a34c0656a962f9b198c5e80Ted Kremenek CE = BD->capture_end(); CI != CE; ++CI) { 484b929f6636c79565e9a34c0656a962f9b198c5e80Ted Kremenek BV->push_back(CI->getVariable(), BC); 485b929f6636c79565e9a34c0656a962f9b198c5e80Ted Kremenek } 486b929f6636c79565e9a34c0656a962f9b198c5e80Ted Kremenek 487b929f6636c79565e9a34c0656a962f9b198c5e80Ted Kremenek // Find the referenced global/static variables. 488b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek FindBlockDeclRefExprsVals F(*BV, BC); 489b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek F.Visit(BD->getBody()); 490d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 491d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek Vec = BV; 492b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek return BV; 493b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek} 494b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek 4951d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenekstd::pair<AnalysisDeclContext::referenced_decls_iterator, 4961d26f48dc2eea1c07431ca1519d7034a21b9bcffTed Kremenek AnalysisDeclContext::referenced_decls_iterator> 4971d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekAnalysisDeclContext::getReferencedBlockVars(const BlockDecl *BD) { 498b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek if (!ReferencedBlockVars) 499b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek ReferencedBlockVars = new llvm::DenseMap<const BlockDecl*,void*>(); 500d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 501b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek DeclVec *V = LazyInitializeReferencedDecls(BD, (*ReferencedBlockVars)[BD], A); 502b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek return std::make_pair(V->begin(), V->end()); 503b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek} 504b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek 5051d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekManagedAnalysis *&AnalysisDeclContext::getAnalysisImpl(const void *tag) { 506a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek if (!ManagedAnalyses) 507a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek ManagedAnalyses = new ManagedAnalysisMap(); 508a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek ManagedAnalysisMap *M = (ManagedAnalysisMap*) ManagedAnalyses; 509a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek return (*M)[tag]; 510a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek} 511a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek 512b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek//===----------------------------------------------------------------------===// 513b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek// Cleanup. 514b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek//===----------------------------------------------------------------------===// 515b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek 516a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted KremenekManagedAnalysis::~ManagedAnalysis() {} 517a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek 5181d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekAnalysisDeclContext::~AnalysisDeclContext() { 519b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek delete forcedBlkExprs; 520b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek delete ReferencedBlockVars; 521a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek // Release the managed analyses. 522a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek if (ManagedAnalyses) { 523a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek ManagedAnalysisMap *M = (ManagedAnalysisMap*) ManagedAnalyses; 524a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek for (ManagedAnalysisMap::iterator I = M->begin(), E = M->end(); I!=E; ++I) 525a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek delete I->second; 526a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek delete M; 527a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek } 528b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek} 529b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek 5301d26f48dc2eea1c07431ca1519d7034a21b9bcffTed KremenekAnalysisDeclContextManager::~AnalysisDeclContextManager() { 531b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek for (ContextMap::iterator I = Contexts.begin(), E = Contexts.end(); I!=E; ++I) 532b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek delete I->second; 533b1a7b65231e86f7da6aacbf00bcdc16c56350e65Ted Kremenek} 5340ee4124012950d7bb853438629b8e7652febf183Ted Kremenek 5350ee4124012950d7bb853438629b8e7652febf183Ted KremenekLocationContext::~LocationContext() {} 5360ee4124012950d7bb853438629b8e7652febf183Ted Kremenek 5370ee4124012950d7bb853438629b8e7652febf183Ted KremenekLocationContextManager::~LocationContextManager() { 5380ee4124012950d7bb853438629b8e7652febf183Ted Kremenek clear(); 5390ee4124012950d7bb853438629b8e7652febf183Ted Kremenek} 5400ee4124012950d7bb853438629b8e7652febf183Ted Kremenek 5410ee4124012950d7bb853438629b8e7652febf183Ted Kremenekvoid LocationContextManager::clear() { 5420ee4124012950d7bb853438629b8e7652febf183Ted Kremenek for (llvm::FoldingSet<LocationContext>::iterator I = Contexts.begin(), 543d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek E = Contexts.end(); I != E; ) { 5440ee4124012950d7bb853438629b8e7652febf183Ted Kremenek LocationContext *LC = &*I; 5450ee4124012950d7bb853438629b8e7652febf183Ted Kremenek ++I; 5460ee4124012950d7bb853438629b8e7652febf183Ted Kremenek delete LC; 5470ee4124012950d7bb853438629b8e7652febf183Ted Kremenek } 548d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 5490ee4124012950d7bb853438629b8e7652febf183Ted Kremenek Contexts.clear(); 5500ee4124012950d7bb853438629b8e7652febf183Ted Kremenek} 5510ee4124012950d7bb853438629b8e7652febf183Ted Kremenek 552