1fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek//===--- CFG.h - Classes for representing and building CFGs------*- C++ -*-===// 2fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// 3fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// The LLVM Compiler Infrastructure 4fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 7fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// 8fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek//===----------------------------------------------------------------------===// 9fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// 10fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// This file defines the CFG and CFGBuilder classes for representing and 11fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// building Control-Flow Graphs (CFGs) from ASTs. 12fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// 13fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek//===----------------------------------------------------------------------===// 14fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 15cd881d534517f09a2fae10445f9b865f49ccc6c8Ted Kremenek#ifndef LLVM_CLANG_CFG_H 16cd881d534517f09a2fae10445f9b865f49ccc6c8Ted Kremenek#define LLVM_CLANG_CFG_H 17cd881d534517f09a2fae10445f9b865f49ccc6c8Ted Kremenek 1874fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek#include "clang/AST/Stmt.h" 19ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek#include "clang/Analysis/Support/BumpVector.h" 20079bd72439448b78629a28da6b1f8abe2cdeaf4dMike Stump#include "clang/Basic/SourceLocation.h" 2130a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/ADT/DenseMap.h" 2230a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/ADT/GraphTraits.h" 23fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie#include "llvm/ADT/Optional.h" 2430a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/ADT/PointerIntPair.h" 2530a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/Support/Allocator.h" 2630a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/Support/Casting.h" 27651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines#include "llvm/Support/raw_ostream.h" 28681ab8998793899076bae9cd6383a5d78b8ee1acBenjamin Kramer#include <bitset> 29c1581a0d64b0ee4f822ed2fca4442a111d03569aHartmut Kaiser#include <cassert> 30403ba3522d1b1c97ae5fad81c1a2c4b3a754e1c1Nick Lewycky#include <iterator> 31651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines#include <memory> 32fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 33fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremeneknamespace clang { 343c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek class CXXDestructorDecl; 35b978a441c7d8bf59e7fede938e1f3b672573b443Mike Stump class Decl; 3642a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class Stmt; 3763f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek class Expr; 387c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski class FieldDecl; 391cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski class VarDecl; 40cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt class CXXCtorInitializer; 417c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski class CXXBaseSpecifier; 428599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski class CXXBindTemporaryExpr; 4342a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class CFG; 4442a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class PrinterHelper; 45e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner class LangOptions; 46e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump class ASTContext; 4736d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose class CXXRecordDecl; 4836d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose class CXXDeleteExpr; 49651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines class CXXNewExpr; 506bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines class BinaryOperator; 51e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump 52852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek/// CFGElement - Represents a top-level expression in a basic block. 53852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenekclass CFGElement { 54852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenekpublic: 55b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu enum Kind { 56b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // main kind 57b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Statement, 58b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Initializer, 59651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines NewAllocator, 60b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // dtor kind 61b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu AutomaticObjectDtor, 6236d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose DeleteDtor, 63b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu BaseDtor, 64b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu MemberDtor, 65b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu TemporaryDtor, 663c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek DTOR_BEGIN = AutomaticObjectDtor, 673c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek DTOR_END = TemporaryDtor 68b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu }; 69b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 70b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuprotected: 713c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek // The int bits are used to mark the kind. 72b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu llvm::PointerIntPair<void *, 2> Data1; 73b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu llvm::PointerIntPair<void *, 2> Data2; 74b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 756bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines CFGElement(Kind kind, const void *Ptr1, const void *Ptr2 = nullptr) 763c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : Data1(const_cast<void*>(Ptr1), ((unsigned) kind) & 0x3), 77651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines Data2(const_cast<void*>(Ptr2), (((unsigned) kind) >> 2) & 0x3) { 78651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines assert(getKind() == kind); 79651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 801cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 81b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement() {} 82b07805485c603be3d8011f72611465324c9e664bDavid Blaikiepublic: 83b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 84fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie /// \brief Convert to the specified CFGElement type, asserting that this 85fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie /// CFGElement is of the desired type. 86fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie template<typename T> 87fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie T castAs() const { 88fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie assert(T::isKind(*this)); 89fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie T t; 90fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGElement& e = t; 91fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie e = *this; 92fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return t; 93fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie } 94fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie 95b07805485c603be3d8011f72611465324c9e664bDavid Blaikie /// \brief Convert to the specified CFGElement type, returning None if this 96b07805485c603be3d8011f72611465324c9e664bDavid Blaikie /// CFGElement is not of the desired type. 97fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie template<typename T> 98b07805485c603be3d8011f72611465324c9e664bDavid Blaikie Optional<T> getAs() const { 99fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie if (!T::isKind(*this)) 100b07805485c603be3d8011f72611465324c9e664bDavid Blaikie return None; 101fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie T t; 102fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGElement& e = t; 103fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie e = *this; 104fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return t; 105fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie } 106fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie 107ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie Kind getKind() const { 1083c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek unsigned x = Data2.getInt(); 1093c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek x <<= 2; 1103c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek x |= Data1.getInt(); 1113c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return (Kind) x; 112b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 113b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 114b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 115b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGStmt : public CFGElement { 116b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1173c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGStmt(Stmt *S) : CFGElement(Statement, S) {} 118b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 119ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie const Stmt *getStmt() const { 120f1d10d939739f1a4544926d807e4f0f9fb64be61Ted Kremenek return static_cast<const Stmt *>(Data1.getPointer()); 121f1d10d939739f1a4544926d807e4f0f9fb64be61Ted Kremenek } 122b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 123fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 124fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 125fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGStmt() {} 126fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &E) { 127fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return E.getKind() == Statement; 128b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 129b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 130b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1311cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// CFGInitializer - Represents C++ base or member initializer from 1321cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// constructor's initialization list. 133b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGInitializer : public CFGElement { 134b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1353c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGInitializer(CXXCtorInitializer *initializer) 1363c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGElement(Initializer, initializer) {} 1371cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 138cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt CXXCtorInitializer* getInitializer() const { 139cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt return static_cast<CXXCtorInitializer*>(Data1.getPointer()); 1401cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 1411cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 142fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 143fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 144fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGInitializer() {} 145fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &E) { 146fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return E.getKind() == Initializer; 147b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 148b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 149b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 150651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines/// CFGNewAllocator - Represents C++ allocator call. 151651f13cea278ec967336033dd032faef0e9fc2ecStephen Hinesclass CFGNewAllocator : public CFGElement { 152651f13cea278ec967336033dd032faef0e9fc2ecStephen Hinespublic: 153651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines explicit CFGNewAllocator(const CXXNewExpr *S) 154651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines : CFGElement(NewAllocator, S) {} 155651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 156651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // Get the new expression. 157651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines const CXXNewExpr *getAllocatorExpr() const { 158651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return static_cast<CXXNewExpr *>(Data1.getPointer()); 159651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 160651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 161651f13cea278ec967336033dd032faef0e9fc2ecStephen Hinesprivate: 162651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines friend class CFGElement; 163651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines CFGNewAllocator() {} 164651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines static bool isKind(const CFGElement &elem) { 165651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return elem.getKind() == NewAllocator; 166651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 167651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines}; 168651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 16953de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski/// CFGImplicitDtor - Represents C++ object destructor implicitly generated 1701cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// by compiler on various occasions. 171b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGImplicitDtor : public CFGElement { 1721cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderskiprotected: 173fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGImplicitDtor() {} 1746bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines CFGImplicitDtor(Kind kind, const void *data1, const void *data2 = nullptr) 1753c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGElement(kind, data1, data2) { 176ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie assert(kind >= DTOR_BEGIN && kind <= DTOR_END); 1773c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek } 1781cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 179b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 180c5aff4497e5bfd7523e00b87560c1a5aa65136ccTed Kremenek const CXXDestructorDecl *getDestructorDecl(ASTContext &astContext) const; 181c5aff4497e5bfd7523e00b87560c1a5aa65136ccTed Kremenek bool isNoReturn(ASTContext &astContext) const; 1821cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 183fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 184fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 185fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &E) { 186fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie Kind kind = E.getKind(); 1873c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return kind >= DTOR_BEGIN && kind <= DTOR_END; 188b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 189b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 190b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1917c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// CFGAutomaticObjDtor - Represents C++ object destructor implicitly generated 1921cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// for automatic object or temporary bound to const reference at the point 1931cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// of leaving its local scope. 194b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGAutomaticObjDtor: public CFGImplicitDtor { 195b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1963c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGAutomaticObjDtor(const VarDecl *var, const Stmt *stmt) 1973c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGImplicitDtor(AutomaticObjectDtor, var, stmt) {} 1981cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 1993c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const VarDecl *getVarDecl() const { 2001cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski return static_cast<VarDecl*>(Data1.getPointer()); 2011cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 2021cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 2031cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski // Get statement end of which triggered the destructor call. 2043c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const Stmt *getTriggerStmt() const { 2051cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski return static_cast<Stmt*>(Data2.getPointer()); 2061cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 2071cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 208fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 209fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 210fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGAutomaticObjDtor() {} 211fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &elem) { 212fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return elem.getKind() == AutomaticObjectDtor; 213b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 214b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 215b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 21636d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose/// CFGDeleteDtor - Represents C++ object destructor generated 21736d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose/// from a call to delete. 21836d558d85653315edb389677e995ec9ccdbfbf3dJordan Roseclass CFGDeleteDtor : public CFGImplicitDtor { 21936d558d85653315edb389677e995ec9ccdbfbf3dJordan Rosepublic: 22036d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose CFGDeleteDtor(const CXXRecordDecl *RD, const CXXDeleteExpr *DE) 22136d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose : CFGImplicitDtor(DeleteDtor, RD, DE) {} 22236d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose 22336d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose const CXXRecordDecl *getCXXRecordDecl() const { 22436d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose return static_cast<CXXRecordDecl*>(Data1.getPointer()); 22536d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose } 22636d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose 22736d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose // Get Delete expression which triggered the destructor call. 22881557223ba8d7ef8b0468a6e1dc8fc79f2de46f2Jordan Rose const CXXDeleteExpr *getDeleteExpr() const { 22936d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose return static_cast<CXXDeleteExpr *>(Data2.getPointer()); 23036d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose } 23136d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose 23236d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose 23336d558d85653315edb389677e995ec9ccdbfbf3dJordan Roseprivate: 23436d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose friend class CFGElement; 23536d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose CFGDeleteDtor() {} 23636d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose static bool isKind(const CFGElement &elem) { 23736d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose return elem.getKind() == DeleteDtor; 23836d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose } 23936d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose}; 24036d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose 2417c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// CFGBaseDtor - Represents C++ object destructor implicitly generated for 2427c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// base object in destructor. 243b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGBaseDtor : public CFGImplicitDtor { 244b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 2453c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGBaseDtor(const CXXBaseSpecifier *base) 2463c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGImplicitDtor(BaseDtor, base) {} 2477c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 2487c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski const CXXBaseSpecifier *getBaseSpecifier() const { 2497c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski return static_cast<const CXXBaseSpecifier*>(Data1.getPointer()); 2507c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 2517c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 252fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 253fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 254fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGBaseDtor() {} 255fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &E) { 256fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return E.getKind() == BaseDtor; 257b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 258b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 259b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 2607c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// CFGMemberDtor - Represents C++ object destructor implicitly generated for 2617c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// member object in destructor. 262b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGMemberDtor : public CFGImplicitDtor { 263b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 2643c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGMemberDtor(const FieldDecl *field) 2656bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines : CFGImplicitDtor(MemberDtor, field, nullptr) {} 2667c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 2673c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const FieldDecl *getFieldDecl() const { 2683c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return static_cast<const FieldDecl*>(Data1.getPointer()); 2697c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 2707c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 271fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 272fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 273fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGMemberDtor() {} 274fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &E) { 275fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return E.getKind() == MemberDtor; 276b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 277b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 278b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 2798599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski/// CFGTemporaryDtor - Represents C++ object destructor implicitly generated 2808599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski/// at the end of full expression for temporary object. 281b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGTemporaryDtor : public CFGImplicitDtor { 282b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 2833c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGTemporaryDtor(CXXBindTemporaryExpr *expr) 2846bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines : CFGImplicitDtor(TemporaryDtor, expr, nullptr) {} 2858599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski 2863c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const CXXBindTemporaryExpr *getBindTemporaryExpr() const { 2873c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return static_cast<const CXXBindTemporaryExpr *>(Data1.getPointer()); 2888599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski } 2898599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski 290fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 291fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 292fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGTemporaryDtor() {} 293fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &E) { 294fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return E.getKind() == TemporaryDtor; 295b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 296852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek}; 297852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 2984ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// CFGTerminator - Represents CFGBlock terminator statement. 2994ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// 3004ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// TemporaryDtorsBranch bit is set to true if the terminator marks a branch 3014ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// in control flow of destructors of temporaries. In this case terminator 3024ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// statement is the same statement that branches control flow in evaluation 3034ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// of matching full expression. 3044ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderskiclass CFGTerminator { 3054ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski llvm::PointerIntPair<Stmt *, 1> Data; 3064ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderskipublic: 3074ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski CFGTerminator() {} 3084ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski CFGTerminator(Stmt *S, bool TemporaryDtorsBranch = false) 3094ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski : Data(S, TemporaryDtorsBranch) {} 3104ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 3114ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski Stmt *getStmt() { return Data.getPointer(); } 3124ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski const Stmt *getStmt() const { return Data.getPointer(); } 3134ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 3144ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski bool isTemporaryDtorsBranch() const { return Data.getInt(); } 3154ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 3164ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski operator Stmt *() { return getStmt(); } 3174ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski operator const Stmt *() const { return getStmt(); } 3184ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 3194ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski Stmt *operator->() { return getStmt(); } 3204ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski const Stmt *operator->() const { return getStmt(); } 3214ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 3224ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski Stmt &operator*() { return *getStmt(); } 3234ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski const Stmt &operator*() const { return *getStmt(); } 3244ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 3257247c88d1e41514a41085f83ebf03dd5220e054aDavid Blaikie LLVM_EXPLICIT operator bool() const { return getStmt(); } 3264ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski}; 3274ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 328fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFGBlock - Represents a single basic block in a source-level CFG. 329fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// It consists of: 330fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 331fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (1) A set of statements/expressions (which may contain subexpressions). 332fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (2) A "terminator" statement (not in the set of statements). 333fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (3) A list of successors and predecessors. 334fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 335fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Terminator: The terminator represents the type of control-flow that occurs 336fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// at the end of the basic block. The terminator is a Stmt* referring to an 337fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// AST node that has control-flow: if-statements, breaks, loops, etc. 338fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// If the control-flow is conditional, the condition expression will appear 339fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// within the set of statements in the block (usually the last statement). 340fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 341fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Predecessors: the order in the set of predecessors is arbitrary. 342fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 343fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Successors: the order in the set of successors is NOT arbitrary. We 344fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// currently have the following orderings based on the terminator: 345fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 346fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Terminator Successor Ordering 347fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// ----------------------------------------------------- 348fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// if Then Block; Else Block 3499cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek/// ? operator LHS expression; RHS expression 3509cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek/// &&, || expression that uses result of && or ||, RHS 351fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 3523cda937d4c015ff6070f1117024621a452cfadddTed Kremenek/// But note that any of that may be NULL in case of optimized-out edges. 3533cda937d4c015ff6070f1117024621a452cfadddTed Kremenek/// 354fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekclass CFGBlock { 355b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu class ElementList { 356852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef BumpVector<CFGElement> ImplTy; 3576c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek ImplTy Impl; 3586c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek public: 359b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu ElementList(BumpVectorContext &C) : Impl(C, 4) {} 360ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 3616c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef std::reverse_iterator<ImplTy::iterator> iterator; 3626c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef std::reverse_iterator<ImplTy::const_iterator> const_iterator; 3636c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef ImplTy::iterator reverse_iterator; 364ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie typedef ImplTy::const_iterator const_reverse_iterator; 365298038352b34c5503db418201f3ddea6e56fd0e1David Blaikie typedef ImplTy::const_reference const_reference; 366ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 367852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek void push_back(CFGElement e, BumpVectorContext &C) { Impl.push_back(e, C); } 36853de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski reverse_iterator insert(reverse_iterator I, size_t Cnt, CFGElement E, 3699c378f705405d37f49795d5e915989de774fe11fTed Kremenek BumpVectorContext &C) { 37053de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski return Impl.insert(I, Cnt, E, C); 37153de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 37253de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski 373298038352b34c5503db418201f3ddea6e56fd0e1David Blaikie const_reference front() const { return Impl.back(); } 374298038352b34c5503db418201f3ddea6e56fd0e1David Blaikie const_reference back() const { return Impl.front(); } 375ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 3766c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek iterator begin() { return Impl.rbegin(); } 3776c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek iterator end() { return Impl.rend(); } 3786c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_iterator begin() const { return Impl.rbegin(); } 3796c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_iterator end() const { return Impl.rend(); } 3806c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek reverse_iterator rbegin() { return Impl.begin(); } 3816c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek reverse_iterator rend() { return Impl.end(); } 3826c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_reverse_iterator rbegin() const { return Impl.begin(); } 3836c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_reverse_iterator rend() const { return Impl.end(); } 3846c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 385852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek CFGElement operator[](size_t i) const { 3866c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek assert(i < Impl.size()); 3876c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek return Impl[Impl.size() - 1 - i]; 3886c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek } 389ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 3906c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek size_t size() const { return Impl.size(); } 3916c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek bool empty() const { return Impl.empty(); } 3926c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek }; 3936c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 394fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// Stmts - The set of statements in the basic block. 395b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu ElementList Elements; 3969cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek 3979cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// Label - An (optional) label that prefixes the executable 3989cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// statements in the block. When this variable is non-NULL, it is 3994c45aa1b00b91847acfb082acfaced3ffa294d1dMike Stump /// either an instance of LabelStmt, SwitchCase or CXXCatchStmt. 4003575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek Stmt *Label; 4011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4029cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// Terminator - The terminator for a basic block that 403fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// indicates the type of control-flow that occurs between a block 404fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// and its successors. 4054ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski CFGTerminator Terminator; 4061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4073575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// LoopTarget - Some blocks are used to represent the "loop edge" to 4083575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// the start of a loop from within the loop body. This Stmt* will be 4093575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// refer to the loop statement for such blocks (and be null otherwise). 4101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Stmt *LoopTarget; 4111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 412fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// BlockID - A numerical ID assigned to a CFGBlock during construction 413fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// of the CFG. 414fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned BlockID; 4151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 416651f13cea278ec967336033dd032faef0e9fc2ecStephen Hinespublic: 417651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines /// This class represents a potential adjacent block in the CFG. It encodes 418651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines /// whether or not the block is actually reachable, or can be proved to be 419651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines /// trivially unreachable. For some cases it allows one to encode scenarios 420651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines /// where a block was substituted because the original (now alternate) block 421651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines /// is unreachable. 422651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines class AdjacentBlock { 423651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines enum Kind { 424651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines AB_Normal, 425651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines AB_Unreachable, 426651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines AB_Alternate 427651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines }; 428651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 429651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines CFGBlock *ReachableBlock; 430651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines llvm::PointerIntPair<CFGBlock*, 2> UnreachableBlock; 431651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 432651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines public: 433651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines /// Construct an AdjacentBlock with a possibly unreachable block. 434651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines AdjacentBlock(CFGBlock *B, bool IsReachable); 435651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 436651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines /// Construct an AdjacentBlock with a reachable block and an alternate 437651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines /// unreachable block. 438651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines AdjacentBlock(CFGBlock *B, CFGBlock *AlternateBlock); 439651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 440651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines /// Get the reachable block, if one exists. 441651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines CFGBlock *getReachableBlock() const { 442651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return ReachableBlock; 443651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 444651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 445651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines /// Get the potentially unreachable block. 446651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines CFGBlock *getPossiblyUnreachableBlock() const { 447651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return UnreachableBlock.getPointer(); 448651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 449651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 450651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines /// Provide an implicit conversion to CFGBlock* so that 451651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines /// AdjacentBlock can be substituted for CFGBlock*. 452651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines operator CFGBlock*() const { 453651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return getReachableBlock(); 454651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 455651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 456651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines CFGBlock& operator *() const { 457651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return *getReachableBlock(); 458651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 459651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 460651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines CFGBlock* operator ->() const { 461651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return getReachableBlock(); 462651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 463651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 464651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines bool isReachable() const { 465651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines Kind K = (Kind) UnreachableBlock.getInt(); 466651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return K == AB_Normal || K == AB_Alternate; 467651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 468651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines }; 469651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 470651f13cea278ec967336033dd032faef0e9fc2ecStephen Hinesprivate: 471fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// Predecessors/Successors - Keep track of the predecessor / successor 472fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// CFG blocks. 473651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines typedef BumpVector<AdjacentBlock> AdjacentBlocks; 474fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek AdjacentBlocks Preds; 475fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek AdjacentBlocks Succs; 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 47783754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// NoReturn - This bit is set when the basic block contains a function call 47883754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// or implicit destructor that is attributed as 'noreturn'. In that case, 47983754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// control cannot technically ever proceed past this block. All such blocks 48083754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// will have a single immediate successor: the exit block. This allows them 48183754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// to be easily reached from the exit block and using this bit quickly 48283754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// recognized without scanning the contents of the block. 48383754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// 48483754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// Optimization Note: This bit could be profitably folded with Terminator's 48583754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// storage if the memory usage of CFGBlock becomes an issue. 48683754162f698a5dafad93fb89be0953651a604d0Chandler Carruth unsigned HasNoReturnElement : 1; 48783754162f698a5dafad93fb89be0953651a604d0Chandler Carruth 48802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// Parent - The parent CFG that owns this CFGBlock. 48902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks CFG *Parent; 49002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 491fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekpublic: 49202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks explicit CFGBlock(unsigned blockid, BumpVectorContext &C, CFG *parent) 4936bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines : Elements(C), Label(nullptr), Terminator(nullptr), LoopTarget(nullptr), 49402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks BlockID(blockid), Preds(C, 1), Succs(C, 1), HasNoReturnElement(false), 49502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks Parent(parent) {} 4967177dee8aee4b432911c91f1b788963bec0cac9fDaniel Dunbar ~CFGBlock() {} 497fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 498fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // Statement iterators 499b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::iterator iterator; 500b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::const_iterator const_iterator; 501b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::reverse_iterator reverse_iterator; 502b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::const_reverse_iterator const_reverse_iterator; 5031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 504b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement front() const { return Elements.front(); } 505b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement back() const { return Elements.back(); } 5061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 507b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu iterator begin() { return Elements.begin(); } 508b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu iterator end() { return Elements.end(); } 509b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_iterator begin() const { return Elements.begin(); } 510b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_iterator end() const { return Elements.end(); } 511fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 512b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu reverse_iterator rbegin() { return Elements.rbegin(); } 513b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu reverse_iterator rend() { return Elements.rend(); } 514b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_reverse_iterator rbegin() const { return Elements.rbegin(); } 515b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_reverse_iterator rend() const { return Elements.rend(); } 5161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 517b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu unsigned size() const { return Elements.size(); } 518b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu bool empty() const { return Elements.empty(); } 519be7a7d6f2e5b86807afd08a568863df973baaa38Ted Kremenek 520b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement operator[](size_t i) const { return Elements[i]; } 5211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 522fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // CFG iterators 523fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::iterator pred_iterator; 524fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_iterator const_pred_iterator; 525fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::reverse_iterator pred_reverse_iterator; 526fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_reverse_iterator const_pred_reverse_iterator; 527fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 528fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::iterator succ_iterator; 529fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_iterator const_succ_iterator; 530fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::reverse_iterator succ_reverse_iterator; 531fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_reverse_iterator const_succ_reverse_iterator; 5321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 533fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_iterator pred_begin() { return Preds.begin(); } 534fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_iterator pred_end() { return Preds.end(); } 535fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_iterator pred_begin() const { return Preds.begin(); } 536fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_iterator pred_end() const { return Preds.end(); } 5371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 538fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_reverse_iterator pred_rbegin() { return Preds.rbegin(); } 5391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump pred_reverse_iterator pred_rend() { return Preds.rend(); } 540fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_reverse_iterator pred_rbegin() const { return Preds.rbegin(); } 541fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_reverse_iterator pred_rend() const { return Preds.rend(); } 542fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 5431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump succ_iterator succ_begin() { return Succs.begin(); } 544fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_iterator succ_end() { return Succs.end(); } 545fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_iterator succ_begin() const { return Succs.begin(); } 5461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_succ_iterator succ_end() const { return Succs.end(); } 5471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 548fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_reverse_iterator succ_rbegin() { return Succs.rbegin(); } 549fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_reverse_iterator succ_rend() { return Succs.rend(); } 550fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_reverse_iterator succ_rbegin() const { return Succs.rbegin(); } 551fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_reverse_iterator succ_rend() const { return Succs.rend(); } 552fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 553fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned succ_size() const { return Succs.size(); } 554fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek bool succ_empty() const { return Succs.empty(); } 555fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 556fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned pred_size() const { return Preds.size(); } 557fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek bool pred_empty() const { return Preds.empty(); } 5581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 559ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 560ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek class FilterOptions { 561ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek public: 562ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek FilterOptions() { 563651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines IgnoreNullPredecessors = 1; 564ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek IgnoreDefaultsWithCoveredEnums = 0; 565be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek } 566ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 567651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines unsigned IgnoreNullPredecessors : 1; 568ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek unsigned IgnoreDefaultsWithCoveredEnums : 1; 569ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek }; 570ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 571ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek static bool FilterEdge(const FilterOptions &F, const CFGBlock *Src, 572be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek const CFGBlock *Dst); 573ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 574ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek template <typename IMPL, bool IsPred> 575ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek class FilteredCFGBlockIterator { 576ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek private: 577ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek IMPL I, E; 578ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const FilterOptions F; 579ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const CFGBlock *From; 580651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines public: 581ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek explicit FilteredCFGBlockIterator(const IMPL &i, const IMPL &e, 582651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines const CFGBlock *from, 583651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines const FilterOptions &f) 584651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines : I(i), E(e), F(f), From(from) { 585651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines while (hasMore() && Filter(*I)) 586651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines ++I; 587651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 588ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 589ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek bool hasMore() const { return I != E; } 590ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 591ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek FilteredCFGBlockIterator &operator++() { 592ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek do { ++I; } while (hasMore() && Filter(*I)); 593ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return *this; 594ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 595ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 596ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const CFGBlock *operator*() const { return *I; } 597ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek private: 598ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek bool Filter(const CFGBlock *To) { 599ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return IsPred ? FilterEdge(F, To, From) : FilterEdge(F, From, To); 600ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 601ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek }; 602ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 603ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek typedef FilteredCFGBlockIterator<const_pred_iterator, true> 604ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_pred_iterator; 605ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 606ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek typedef FilteredCFGBlockIterator<const_succ_iterator, false> 607ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_succ_iterator; 608ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 609ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_pred_iterator filtered_pred_start_end(const FilterOptions &f) const { 610ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return filtered_pred_iterator(pred_begin(), pred_end(), this, f); 611ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 612ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 613ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_succ_iterator filtered_succ_start_end(const FilterOptions &f) const { 614ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return filtered_succ_iterator(succ_begin(), succ_end(), this, f); 615ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 616ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 617fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // Manipulation of block contents 6181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 619651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines void setTerminator(CFGTerminator Term) { Terminator = Term; } 6209c378f705405d37f49795d5e915989de774fe11fTed Kremenek void setLabel(Stmt *Statement) { Label = Statement; } 6213575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek void setLoopTarget(const Stmt *loopTarget) { LoopTarget = loopTarget; } 62283754162f698a5dafad93fb89be0953651a604d0Chandler Carruth void setHasNoReturnElement() { HasNoReturnElement = true; } 6239cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek 6244ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski CFGTerminator getTerminator() { return Terminator; } 6254ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski const CFGTerminator getTerminator() const { return Terminator; } 6261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 627651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines Stmt *getTerminatorCondition(bool StripParens = true); 6281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 629651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines const Stmt *getTerminatorCondition(bool StripParens = true) const { 630651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return const_cast<CFGBlock*>(this)->getTerminatorCondition(StripParens); 631411cdee0b490f79428c9eb977f25199eb7d21cd8Ted Kremenek } 6321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6333575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek const Stmt *getLoopTarget() const { return LoopTarget; } 6341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6359c378f705405d37f49795d5e915989de774fe11fTed Kremenek Stmt *getLabel() { return Label; } 6369c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *getLabel() const { return Label; } 6371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 63883754162f698a5dafad93fb89be0953651a604d0Chandler Carruth bool hasNoReturnElement() const { return HasNoReturnElement; } 63983754162f698a5dafad93fb89be0953651a604d0Chandler Carruth 640fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned getBlockID() const { return BlockID; } 6411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 64202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks CFG *getParent() const { return Parent; } 64302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 644ef8225444452a1486bd721f3285301fe84643b00Stephen Hines void dump() const; 645ef8225444452a1486bd721f3285301fe84643b00Stephen Hines 646682060c5d95f6e4f79536013781ab0870cdd3850Ted Kremenek void dump(const CFG *cfg, const LangOptions &LO, bool ShowColors = false) const; 647682060c5d95f6e4f79536013781ab0870cdd3850Ted Kremenek void print(raw_ostream &OS, const CFG* cfg, const LangOptions &LO, 648682060c5d95f6e4f79536013781ab0870cdd3850Ted Kremenek bool ShowColors) const; 6498cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner void printTerminator(raw_ostream &OS, const LangOptions &LO) const; 650651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines void printAsOperand(raw_ostream &OS, bool /*PrintType*/) { 651651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines OS << "BB#" << getBlockID(); 652ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek } 653ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 654651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines /// Adds a (potentially unreachable) successor block to the current block. 655651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines void addSuccessor(AdjacentBlock Succ, BumpVectorContext &C); 656651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 6579c378f705405d37f49795d5e915989de774fe11fTed Kremenek void appendStmt(Stmt *statement, BumpVectorContext &C) { 658892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek Elements.push_back(CFGStmt(statement), C); 659079bd72439448b78629a28da6b1f8abe2cdeaf4dMike Stump } 66082bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski 661cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt void appendInitializer(CXXCtorInitializer *initializer, 6629c378f705405d37f49795d5e915989de774fe11fTed Kremenek BumpVectorContext &C) { 663892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek Elements.push_back(CFGInitializer(initializer), C); 66482bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski } 66582bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski 666651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines void appendNewAllocator(CXXNewExpr *NE, 667651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines BumpVectorContext &C) { 668651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines Elements.push_back(CFGNewAllocator(NE), C); 669651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 670651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 6717c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski void appendBaseDtor(const CXXBaseSpecifier *BS, BumpVectorContext &C) { 6727c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski Elements.push_back(CFGBaseDtor(BS), C); 6737c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 6747c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 6757c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski void appendMemberDtor(FieldDecl *FD, BumpVectorContext &C) { 6767c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski Elements.push_back(CFGMemberDtor(FD), C); 6777c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 678ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 6798599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski void appendTemporaryDtor(CXXBindTemporaryExpr *E, BumpVectorContext &C) { 6808599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski Elements.push_back(CFGTemporaryDtor(E), C); 6818599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski } 6827c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 683c8cfc74bdcc999828bc232294d937fb191940d5bChandler Carruth void appendAutomaticObjDtor(VarDecl *VD, Stmt *S, BumpVectorContext &C) { 684c8cfc74bdcc999828bc232294d937fb191940d5bChandler Carruth Elements.push_back(CFGAutomaticObjDtor(VD, S), C); 685c8cfc74bdcc999828bc232294d937fb191940d5bChandler Carruth } 686c8cfc74bdcc999828bc232294d937fb191940d5bChandler Carruth 68736d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose void appendDeleteDtor(CXXRecordDecl *RD, CXXDeleteExpr *DE, BumpVectorContext &C) { 68836d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose Elements.push_back(CFGDeleteDtor(RD, DE), C); 68936d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose } 69036d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose 69153de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // Destructors must be inserted in reversed order. So insertion is in two 69253de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // steps. First we prepare space for some number of elements, then we insert 69353de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // the elements beginning at the last position in prepared space. 69453de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski iterator beginAutomaticObjDtorsInsert(iterator I, size_t Cnt, 6959c378f705405d37f49795d5e915989de774fe11fTed Kremenek BumpVectorContext &C) { 6966bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return iterator(Elements.insert(I.base(), Cnt, 6976bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines CFGAutomaticObjDtor(nullptr, 0), C)); 69853de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 6999c378f705405d37f49795d5e915989de774fe11fTed Kremenek iterator insertAutomaticObjDtor(iterator I, VarDecl *VD, Stmt *S) { 70053de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski *I = CFGAutomaticObjDtor(VD, S); 70153de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski return ++I; 70253de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 703fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek}; 7041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7056bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// \brief CFGCallback defines methods that should be called when a logical 7066bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// operator error is found when building the CFG. 7076bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hinesclass CFGCallback { 7086bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hinespublic: 7096bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines CFGCallback() {} 7106bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines virtual void compareAlwaysTrue(const BinaryOperator *B, bool isAlwaysTrue) {} 7116bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines virtual void compareBitwiseEquality(const BinaryOperator *B, 7126bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines bool isAlwaysTrue) {} 7136bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines virtual ~CFGCallback() {} 7146bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines}; 7156bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 716fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFG - Represents a source-level, intra-procedural CFG that represents the 717fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// control-flow of a Stmt. The Stmt can represent an entire function body, 718fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// or a single expression. A CFG will always contain one empty block that 719fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// represents the Exit point of the CFG. A CFG will also contain a designated 720fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Entry block. The CFG solely represents control-flow; it consists of 721fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFGBlocks which are simply containers of Stmt*'s in the AST the CFG 722fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// was constructed from. 723fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekclass CFG { 724fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekpublic: 725a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 726a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Construction & Manipulation. 727a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 728a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 7296c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek class BuildOptions { 730681ab8998793899076bae9cd6383a5d78b8ee1acBenjamin Kramer std::bitset<Stmt::lastStmtConstant> alwaysAddMask; 7316c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek public: 7320d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek typedef llvm::DenseMap<const Stmt *, const CFGBlock*> ForcedBlkExprs; 733ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie ForcedBlkExprs **forcedBlkExprs; 7346bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines CFGCallback *Observer; 735bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek bool PruneTriviallyFalseEdges; 736bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek bool AddEHEdges; 737bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek bool AddInitializers; 738bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek bool AddImplicitDtors; 7395a1ffe98b04120846a15f7105905b5f363b08635Jordan Rose bool AddTemporaryDtors; 740fbd4b5dc7febd1d8b4fa64ab00a29d72b44bec7bTed Kremenek bool AddStaticInitBranches; 741651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines bool AddCXXNewAllocator; 742ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 74374fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek bool alwaysAdd(const Stmt *stmt) const { 74474fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek return alwaysAddMask[stmt->getStmtClass()]; 74574fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek } 746ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 747882998923889a2fcce9b49696506c499e22cf38fTed Kremenek BuildOptions &setAlwaysAdd(Stmt::StmtClass stmtClass, bool val = true) { 748882998923889a2fcce9b49696506c499e22cf38fTed Kremenek alwaysAddMask[stmtClass] = val; 749882998923889a2fcce9b49696506c499e22cf38fTed Kremenek return *this; 750882998923889a2fcce9b49696506c499e22cf38fTed Kremenek } 751ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 752882998923889a2fcce9b49696506c499e22cf38fTed Kremenek BuildOptions &setAllAlwaysAdd() { 753882998923889a2fcce9b49696506c499e22cf38fTed Kremenek alwaysAddMask.set(); 754bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek return *this; 75574fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek } 7566c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek 7576c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek BuildOptions() 7586bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines : forcedBlkExprs(nullptr), Observer(nullptr), 7596bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines PruneTriviallyFalseEdges(true), AddEHEdges(false), 7606bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines AddInitializers(false), AddImplicitDtors(false), 7616bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines AddTemporaryDtors(false), AddStaticInitBranches(false), 7626bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines AddCXXNewAllocator(false) {} 7636c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek }; 7646c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek 76502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// \brief Provides a custom implementation of the iterator class to have the 76602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// same interface as Function::iterator - iterator returns CFGBlock 76702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// (not a pointer to CFGBlock). 76802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks class graph_iterator { 76902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks public: 77002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef const CFGBlock value_type; 77102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef value_type& reference; 77202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef value_type* pointer; 77302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef BumpVector<CFGBlock*>::iterator ImplTy; 77402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 77502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks graph_iterator(const ImplTy &i) : I(i) {} 77602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 77702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks bool operator==(const graph_iterator &X) const { return I == X.I; } 77802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks bool operator!=(const graph_iterator &X) const { return I != X.I; } 77902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 78002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks reference operator*() const { return **I; } 78102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks pointer operator->() const { return *I; } 78202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks operator CFGBlock* () { return *I; } 78302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 78402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks graph_iterator &operator++() { ++I; return *this; } 78502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks graph_iterator &operator--() { --I; return *this; } 78602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 78702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks private: 78802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks ImplTy I; 78902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks }; 79002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 79102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks class const_graph_iterator { 79202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks public: 79302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef const CFGBlock value_type; 79402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef value_type& reference; 79502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef value_type* pointer; 79602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef BumpVector<CFGBlock*>::const_iterator ImplTy; 79702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 79802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks const_graph_iterator(const ImplTy &i) : I(i) {} 79902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 80002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks bool operator==(const const_graph_iterator &X) const { return I == X.I; } 80102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks bool operator!=(const const_graph_iterator &X) const { return I != X.I; } 80202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 80302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks reference operator*() const { return **I; } 80402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks pointer operator->() const { return *I; } 80502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks operator CFGBlock* () const { return *I; } 80602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 80702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks const_graph_iterator &operator++() { ++I; return *this; } 80802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks const_graph_iterator &operator--() { --I; return *this; } 80902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 81002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks private: 81102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks ImplTy I; 81202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks }; 81302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 814a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// buildCFG - Builds a CFG from an AST. The responsibility to free the 8151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// constructed CFG belongs to the caller. 8169c378f705405d37f49795d5e915989de774fe11fTed Kremenek static CFG* buildCFG(const Decl *D, Stmt *AST, ASTContext *C, 817b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek const BuildOptions &BO); 8181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 819a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// createBlock - Create a new block in the CFG. The CFG owns the block; 820a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// the caller should not directly free it. 8219c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock *createBlock(); 8221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 823a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// setEntry - Set the entry block of the CFG. This is typically used 824a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// only during CFG construction. Most CFG clients expect that the 825a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// entry block has no predecessors and contains no statements. 826a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek void setEntry(CFGBlock *B) { Entry = B; } 8271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 828e38158de9236dfcded7da56126134e5e3e49cb01Ted Kremenek /// setIndirectGotoBlock - Set the block used for indirect goto jumps. 829e38158de9236dfcded7da56126134e5e3e49cb01Ted Kremenek /// This is typically used only during CFG construction. 8309c378f705405d37f49795d5e915989de774fe11fTed Kremenek void setIndirectGotoBlock(CFGBlock *B) { IndirectGotoBlock = B; } 8311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 832a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 833a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // Block Iterators 834a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 835a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 836ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie typedef BumpVector<CFGBlock*> CFGBlockListTy; 837a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef CFGBlockListTy::iterator iterator; 838a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef CFGBlockListTy::const_iterator const_iterator; 839a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef std::reverse_iterator<iterator> reverse_iterator; 840a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 841fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 8429c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock & front() { return *Blocks.front(); } 8439c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock & back() { return *Blocks.back(); } 8441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 84519bb356317952445b03ee341c02f6147083c9eeaTed Kremenek iterator begin() { return Blocks.begin(); } 84619bb356317952445b03ee341c02f6147083c9eeaTed Kremenek iterator end() { return Blocks.end(); } 84719bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_iterator begin() const { return Blocks.begin(); } 8481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_iterator end() const { return Blocks.end(); } 8491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 85002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks graph_iterator nodes_begin() { return graph_iterator(Blocks.begin()); } 85102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks graph_iterator nodes_end() { return graph_iterator(Blocks.end()); } 85202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks const_graph_iterator nodes_begin() const { 85302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return const_graph_iterator(Blocks.begin()); 85402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks } 85502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks const_graph_iterator nodes_end() const { 85602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return const_graph_iterator(Blocks.end()); 85702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks } 85802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 85919bb356317952445b03ee341c02f6147083c9eeaTed Kremenek reverse_iterator rbegin() { return Blocks.rbegin(); } 86019bb356317952445b03ee341c02f6147083c9eeaTed Kremenek reverse_iterator rend() { return Blocks.rend(); } 86119bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_reverse_iterator rbegin() const { return Blocks.rbegin(); } 86219bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_reverse_iterator rend() const { return Blocks.rend(); } 8631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8649c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock & getEntry() { return *Entry; } 8659c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock & getEntry() const { return *Entry; } 8669c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock & getExit() { return *Exit; } 8679c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock & getExit() const { return *Exit; } 8687dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 8699c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock * getIndirectGotoBlock() { return IndirectGotoBlock; } 8709c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock * getIndirectGotoBlock() const { return IndirectGotoBlock; } 871ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 872f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek typedef std::vector<const CFGBlock*>::const_iterator try_block_iterator; 873f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek try_block_iterator try_blocks_begin() const { 874f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek return TryDispatchBlocks.begin(); 875f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek } 876f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek try_block_iterator try_blocks_end() const { 877f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek return TryDispatchBlocks.end(); 878f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek } 879ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 880f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek void addTryDispatchBlock(const CFGBlock *block) { 881f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek TryDispatchBlocks.push_back(block); 882f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek } 8831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88449a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// Records a synthetic DeclStmt and the DeclStmt it was constructed from. 88549a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// 88649a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// The CFG uses synthetic DeclStmts when a single AST DeclStmt contains 88749a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// multiple decls. 88849a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose void addSyntheticDeclStmt(const DeclStmt *Synthetic, 88949a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose const DeclStmt *Source) { 89049a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose assert(Synthetic->isSingleDecl() && "Can handle single declarations only"); 89149a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose assert(Synthetic != Source && "Don't include original DeclStmts in map"); 89249a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose assert(!SyntheticDeclStmts.count(Synthetic) && "Already in map"); 89349a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose SyntheticDeclStmts[Synthetic] = Source; 89449a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose } 89549a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose 89649a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose typedef llvm::DenseMap<const DeclStmt *, const DeclStmt *>::const_iterator 89749a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose synthetic_stmt_iterator; 89849a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose 89949a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// Iterates over synthetic DeclStmts in the CFG. 90049a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// 90149a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// Each element is a (synthetic statement, source statement) pair. 90249a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// 90349a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// \sa addSyntheticDeclStmt 90449a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose synthetic_stmt_iterator synthetic_stmt_begin() const { 90549a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose return SyntheticDeclStmts.begin(); 90649a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose } 90749a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose 90849a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// \sa synthetic_stmt_begin 90949a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose synthetic_stmt_iterator synthetic_stmt_end() const { 91049a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose return SyntheticDeclStmts.end(); 91149a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose } 91249a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose 913a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 914a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek // Member templates useful for various batch operations over CFGs. 915a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek //===--------------------------------------------------------------------===// 9161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 917a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek template <typename CALLBACK> 918a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek void VisitBlockStmts(CALLBACK& O) const { 919a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek for (const_iterator I=begin(), E=end(); I != E; ++I) 920ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek for (CFGBlock::const_iterator BI=(*I)->begin(), BE=(*I)->end(); 921b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu BI != BE; ++BI) { 922b07805485c603be3d8011f72611465324c9e664bDavid Blaikie if (Optional<CFGStmt> stmt = BI->getAs<CFGStmt>()) 923b07805485c603be3d8011f72611465324c9e664bDavid Blaikie O(const_cast<Stmt*>(stmt->getStmt())); 924b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 9251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 9261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 927a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek //===--------------------------------------------------------------------===// 928a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Introspection. 929a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 930a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 9310c8c5365be0176e8399e97d7da3293c79bc9da24Mike Stump /// getNumBlockIDs - Returns the total number of BlockIDs allocated (which 9320c8c5365be0176e8399e97d7da3293c79bc9da24Mike Stump /// start at 0). 9339438252ad2ecae5338df565ca33c6969e4fbfa41Ted Kremenek unsigned getNumBlockIDs() const { return NumBlockIDs; } 934a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 93502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// size - Return the total number of CFGBlocks within the CFG 93602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// This is simply a renaming of the getNumBlockIDs(). This is necessary 93702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// because the dominator implementation needs such an interface. 93802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks unsigned size() const { return NumBlockIDs; } 93902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 940a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 941a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Debugging: Pretty-Printing and Visualization. 942a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 943a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 944e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void viewCFG(const LangOptions &LO) const; 945682060c5d95f6e4f79536013781ab0870cdd3850Ted Kremenek void print(raw_ostream &OS, const LangOptions &LO, bool ShowColors) const; 946682060c5d95f6e4f79536013781ab0870cdd3850Ted Kremenek void dump(const LangOptions &LO, bool ShowColors) const; 947a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 948a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 949a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // Internal: constructors and data. 950a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 951a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 9526bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines CFG() 9536bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines : Entry(nullptr), Exit(nullptr), IndirectGotoBlock(nullptr), NumBlockIDs(0), 9546bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines Blocks(BlkBVC, 10) {} 9551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 956ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek llvm::BumpPtrAllocator& getAllocator() { 957ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek return BlkBVC.getAllocator(); 958ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek } 959ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 960ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek BumpVectorContext &getBumpVectorContext() { 961ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek return BlkBVC; 962ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek } 9631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 964a36c6540346266f570b2fc7457950dea45d89988Ted Kremenekprivate: 9659c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock *Entry; 9669c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock *Exit; 967a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* IndirectGotoBlock; // Special block to contain collective dispatch 968ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek // for indirect gotos 96963f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek unsigned NumBlockIDs; 9701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 971ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek BumpVectorContext BlkBVC; 972ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 973ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek CFGBlockListTy Blocks; 974ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 975f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek /// C++ 'try' statements are modeled with an indirect dispatch block. 976f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek /// This is the collection of such blocks present in the CFG. 977f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek std::vector<const CFGBlock *> TryDispatchBlocks; 9781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 97949a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// Collects DeclStmts synthesized for this CFG and maps each one back to its 98049a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// source DeclStmt. 98149a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose llvm::DenseMap<const DeclStmt *, const DeclStmt *> SyntheticDeclStmts; 982fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek}; 983fa2be43dbd6fdc4414e261db69aaf35dfb21a416Ted Kremenek} // end namespace clang 9847dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 9857dba8607e59096014b7139ff20ef00870041d518Ted Kremenek//===----------------------------------------------------------------------===// 9867dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// GraphTraits specializations for CFG basic block graphs (source-level CFGs) 9877dba8607e59096014b7139ff20ef00870041d518Ted Kremenek//===----------------------------------------------------------------------===// 9887dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 9897dba8607e59096014b7139ff20ef00870041d518Ted Kremeneknamespace llvm { 9907dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 9914ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// Implement simplify_type for CFGTerminator, so that we can dyn_cast from 9924ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// CFGTerminator to a specific Stmt class. 9934ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderskitemplate <> struct simplify_type< ::clang::CFGTerminator> { 9944ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski typedef ::clang::Stmt *SimpleType; 99594cf910ac2d1719c1dfc163bbec3953f12efdf6fRafael Espindola static SimpleType getSimplifiedValue(::clang::CFGTerminator Val) { 996e81fdb1fdde48d3fa18df56c5797f6b0bc5dfc4aRafael Espindola return Val.getStmt(); 9974ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski } 9984ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski}; 9994ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 10007dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// Traits for: CFGBlock 10017dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 10029c378f705405d37f49795d5e915989de774fe11fTed Kremenektemplate <> struct GraphTraits< ::clang::CFGBlock *> { 1003852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock NodeType; 1004852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::succ_iterator ChildIteratorType; 10051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10069c378f705405d37f49795d5e915989de774fe11fTed Kremenek static NodeType* getEntryNode(::clang::CFGBlock *BB) 10077dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return BB; } 10087dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 10097dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 10107dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_begin(); } 10111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10127dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 10137dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_end(); } 10147dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 10157dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 10169c378f705405d37f49795d5e915989de774fe11fTed Kremenektemplate <> struct GraphTraits< const ::clang::CFGBlock *> { 1017852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef const ::clang::CFGBlock NodeType; 1018852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::const_succ_iterator ChildIteratorType; 10191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10209c378f705405d37f49795d5e915989de774fe11fTed Kremenek static NodeType* getEntryNode(const clang::CFGBlock *BB) 10217dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return BB; } 10221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10237dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 10247dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_begin(); } 10251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10267dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 10277dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_end(); } 10287dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 10297dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 103002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zakstemplate <> struct GraphTraits<Inverse< ::clang::CFGBlock*> > { 103102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef ::clang::CFGBlock NodeType; 103202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef ::clang::CFGBlock::const_pred_iterator ChildIteratorType; 103302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 103402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static NodeType *getEntryNode(Inverse< ::clang::CFGBlock*> G) 103502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks { return G.Graph; } 103602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 103702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static inline ChildIteratorType child_begin(NodeType* N) 103802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks { return N->pred_begin(); } 103902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 104002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static inline ChildIteratorType child_end(NodeType* N) 104102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks { return N->pred_end(); } 104202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks}; 104302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 1044852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<Inverse<const ::clang::CFGBlock*> > { 1045852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef const ::clang::CFGBlock NodeType; 1046852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::const_pred_iterator ChildIteratorType; 10477dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 1048852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode(Inverse<const ::clang::CFGBlock*> G) 10497dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return G.Graph; } 10507dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 10517dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 10527dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->pred_begin(); } 10531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10547dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 10557dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->pred_end(); } 10567dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 10577dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 10587dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// Traits for: CFG 10597dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 1060852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits< ::clang::CFG* > 10619c378f705405d37f49795d5e915989de774fe11fTed Kremenek : public GraphTraits< ::clang::CFGBlock *> { 10627dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 106302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef ::clang::CFG::graph_iterator nodes_iterator; 10641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 106502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static NodeType *getEntryNode(::clang::CFG* F) { return &F->getEntry(); } 106602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static nodes_iterator nodes_begin(::clang::CFG* F) { return F->nodes_begin();} 106702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static nodes_iterator nodes_end(::clang::CFG* F) { return F->nodes_end(); } 106802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static unsigned size(::clang::CFG* F) { return F->size(); } 10697dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 10707dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 1071852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<const ::clang::CFG* > 10729c378f705405d37f49795d5e915989de774fe11fTed Kremenek : public GraphTraits<const ::clang::CFGBlock *> { 10737dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 107402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef ::clang::CFG::const_graph_iterator nodes_iterator; 10757dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 1076852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode( const ::clang::CFG* F) { 1077852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return &F->getEntry(); 1078852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1079852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_begin( const ::clang::CFG* F) { 108002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return F->nodes_begin(); 1081852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 1082852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_end( const ::clang::CFG* F) { 108302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return F->nodes_end(); 1084852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 108502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static unsigned size(const ::clang::CFG* F) { 108602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return F->size(); 108702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks } 108802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks}; 108902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 109002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zakstemplate <> struct GraphTraits<Inverse< ::clang::CFG*> > 109102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks : public GraphTraits<Inverse< ::clang::CFGBlock*> > { 109202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 109302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef ::clang::CFG::graph_iterator nodes_iterator; 109402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 109502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static NodeType *getEntryNode( ::clang::CFG* F) { return &F->getExit(); } 109602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static nodes_iterator nodes_begin( ::clang::CFG* F) {return F->nodes_begin();} 109702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static nodes_iterator nodes_end( ::clang::CFG* F) { return F->nodes_end(); } 10987dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 10997dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 1100852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<Inverse<const ::clang::CFG*> > 1101852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek : public GraphTraits<Inverse<const ::clang::CFGBlock*> > { 11027dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 110302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef ::clang::CFG::const_graph_iterator nodes_iterator; 11047dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 1105852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode(const ::clang::CFG* F) { return &F->getExit(); } 110602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static nodes_iterator nodes_begin(const ::clang::CFG* F) { 110702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return F->nodes_begin(); 110802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks } 110902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static nodes_iterator nodes_end(const ::clang::CFG* F) { 111002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return F->nodes_end(); 111102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks } 11127dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 11137dba8607e59096014b7139ff20ef00870041d518Ted Kremenek} // end llvm namespace 1114cd881d534517f09a2fae10445f9b865f49ccc6c8Ted Kremenek#endif 1115