CFG.h revision 36d558d85653315edb389677e995ec9ccdbfbf3d
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/OwningPtr.h" 2530a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/ADT/PointerIntPair.h" 2630a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/Support/Allocator.h" 2730a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/Support/Casting.h" 28681ab8998793899076bae9cd6383a5d78b8ee1acBenjamin Kramer#include <bitset> 29c1581a0d64b0ee4f822ed2fca4442a111d03569aHartmut Kaiser#include <cassert> 30403ba3522d1b1c97ae5fad81c1a2c4b3a754e1c1Nick Lewycky#include <iterator> 31fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 32fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremeneknamespace clang { 333c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek class CXXDestructorDecl; 34b978a441c7d8bf59e7fede938e1f3b672573b443Mike Stump class Decl; 3542a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class Stmt; 3663f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek class Expr; 377c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski class FieldDecl; 381cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski class VarDecl; 39cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt class CXXCtorInitializer; 407c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski class CXXBaseSpecifier; 418599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski class CXXBindTemporaryExpr; 4242a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class CFG; 4342a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class PrinterHelper; 44e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner class LangOptions; 45e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump class ASTContext; 4636d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose class CXXRecordDecl; 4736d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose class CXXDeleteExpr; 48e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump 49852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek/// CFGElement - Represents a top-level expression in a basic block. 50852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenekclass CFGElement { 51852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenekpublic: 52b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu enum Kind { 53b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // main kind 54b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Statement, 55b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Initializer, 56b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // dtor kind 57b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu AutomaticObjectDtor, 5836d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose DeleteDtor, 59b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu BaseDtor, 60b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu MemberDtor, 61b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu TemporaryDtor, 623c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek DTOR_BEGIN = AutomaticObjectDtor, 633c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek DTOR_END = TemporaryDtor 64b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu }; 65b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 66b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuprotected: 673c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek // The int bits are used to mark the kind. 68b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu llvm::PointerIntPair<void *, 2> Data1; 69b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu llvm::PointerIntPair<void *, 2> Data2; 70b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 713c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGElement(Kind kind, const void *Ptr1, const void *Ptr2 = 0) 723c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : Data1(const_cast<void*>(Ptr1), ((unsigned) kind) & 0x3), 73ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie Data2(const_cast<void*>(Ptr2), (((unsigned) kind) >> 2) & 0x3) {} 741cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 75b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement() {} 76b07805485c603be3d8011f72611465324c9e664bDavid Blaikiepublic: 77b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 78fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie /// \brief Convert to the specified CFGElement type, asserting that this 79fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie /// CFGElement is of the desired type. 80fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie template<typename T> 81fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie T castAs() const { 82fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie assert(T::isKind(*this)); 83fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie T t; 84fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGElement& e = t; 85fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie e = *this; 86fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return t; 87fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie } 88fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie 89b07805485c603be3d8011f72611465324c9e664bDavid Blaikie /// \brief Convert to the specified CFGElement type, returning None if this 90b07805485c603be3d8011f72611465324c9e664bDavid Blaikie /// CFGElement is not of the desired type. 91fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie template<typename T> 92b07805485c603be3d8011f72611465324c9e664bDavid Blaikie Optional<T> getAs() const { 93fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie if (!T::isKind(*this)) 94b07805485c603be3d8011f72611465324c9e664bDavid Blaikie return None; 95fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie T t; 96fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGElement& e = t; 97fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie e = *this; 98fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return t; 99fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie } 100fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie 101ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie Kind getKind() const { 1023c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek unsigned x = Data2.getInt(); 1033c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek x <<= 2; 1043c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek x |= Data1.getInt(); 1053c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return (Kind) x; 106b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 107b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 108b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 109b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGStmt : public CFGElement { 110b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1113c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGStmt(Stmt *S) : CFGElement(Statement, S) {} 112b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 113ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie const Stmt *getStmt() const { 114f1d10d939739f1a4544926d807e4f0f9fb64be61Ted Kremenek return static_cast<const Stmt *>(Data1.getPointer()); 115f1d10d939739f1a4544926d807e4f0f9fb64be61Ted Kremenek } 116b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 117fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 118fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 119fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGStmt() {} 120fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &E) { 121fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return E.getKind() == Statement; 122b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 123b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 124b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1251cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// CFGInitializer - Represents C++ base or member initializer from 1261cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// constructor's initialization list. 127b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGInitializer : public CFGElement { 128b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1293c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGInitializer(CXXCtorInitializer *initializer) 1303c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGElement(Initializer, initializer) {} 1311cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 132cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt CXXCtorInitializer* getInitializer() const { 133cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt return static_cast<CXXCtorInitializer*>(Data1.getPointer()); 1341cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 1351cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 136fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 137fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 138fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGInitializer() {} 139fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &E) { 140fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return E.getKind() == Initializer; 141b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 142b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 143b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 14453de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski/// CFGImplicitDtor - Represents C++ object destructor implicitly generated 1451cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// by compiler on various occasions. 146b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGImplicitDtor : public CFGElement { 1471cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderskiprotected: 148fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGImplicitDtor() {} 149ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie CFGImplicitDtor(Kind kind, const void *data1, const void *data2 = 0) 1503c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGElement(kind, data1, data2) { 151ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie assert(kind >= DTOR_BEGIN && kind <= DTOR_END); 1523c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek } 1531cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 154b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 155c5aff4497e5bfd7523e00b87560c1a5aa65136ccTed Kremenek const CXXDestructorDecl *getDestructorDecl(ASTContext &astContext) const; 156c5aff4497e5bfd7523e00b87560c1a5aa65136ccTed Kremenek bool isNoReturn(ASTContext &astContext) const; 1571cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 158fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 159fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 160fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &E) { 161fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie Kind kind = E.getKind(); 1623c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return kind >= DTOR_BEGIN && kind <= DTOR_END; 163b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 164b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 165b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1667c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// CFGAutomaticObjDtor - Represents C++ object destructor implicitly generated 1671cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// for automatic object or temporary bound to const reference at the point 1681cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// of leaving its local scope. 169b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGAutomaticObjDtor: public CFGImplicitDtor { 170b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1713c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGAutomaticObjDtor(const VarDecl *var, const Stmt *stmt) 1723c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGImplicitDtor(AutomaticObjectDtor, var, stmt) {} 1731cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 1743c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const VarDecl *getVarDecl() const { 1751cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski return static_cast<VarDecl*>(Data1.getPointer()); 1761cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 1771cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 1781cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski // Get statement end of which triggered the destructor call. 1793c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const Stmt *getTriggerStmt() const { 1801cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski return static_cast<Stmt*>(Data2.getPointer()); 1811cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 1821cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 183fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 184fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 185fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGAutomaticObjDtor() {} 186fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &elem) { 187fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return elem.getKind() == AutomaticObjectDtor; 188b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 189b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 190b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 19136d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose/// CFGDeleteDtor - Represents C++ object destructor generated 19236d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose/// from a call to delete. 19336d558d85653315edb389677e995ec9ccdbfbf3dJordan Roseclass CFGDeleteDtor : public CFGImplicitDtor { 19436d558d85653315edb389677e995ec9ccdbfbf3dJordan Rosepublic: 19536d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose CFGDeleteDtor(const CXXRecordDecl *RD, const CXXDeleteExpr *DE) 19636d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose : CFGImplicitDtor(DeleteDtor, RD, DE) {} 19736d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose 19836d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose const CXXRecordDecl *getCXXRecordDecl() const { 19936d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose return static_cast<CXXRecordDecl*>(Data1.getPointer()); 20036d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose } 20136d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose 20236d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose // Get Delete expression which triggered the destructor call. 20336d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose const CXXDeleteExpr *getDeleteExpr() { 20436d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose return static_cast<CXXDeleteExpr *>(Data2.getPointer()); 20536d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose } 20636d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose 20736d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose 20836d558d85653315edb389677e995ec9ccdbfbf3dJordan Roseprivate: 20936d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose friend class CFGElement; 21036d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose CFGDeleteDtor() {} 21136d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose static bool isKind(const CFGElement &elem) { 21236d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose return elem.getKind() == DeleteDtor; 21336d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose } 21436d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose}; 21536d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose 2167c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// CFGBaseDtor - Represents C++ object destructor implicitly generated for 2177c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// base object in destructor. 218b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGBaseDtor : public CFGImplicitDtor { 219b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 2203c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGBaseDtor(const CXXBaseSpecifier *base) 2213c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGImplicitDtor(BaseDtor, base) {} 2227c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 2237c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski const CXXBaseSpecifier *getBaseSpecifier() const { 2247c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski return static_cast<const CXXBaseSpecifier*>(Data1.getPointer()); 2257c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 2267c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 227fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 228fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 229fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGBaseDtor() {} 230fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &E) { 231fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return E.getKind() == BaseDtor; 232b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 233b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 234b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 2357c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// CFGMemberDtor - Represents C++ object destructor implicitly generated for 2367c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// member object in destructor. 237b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGMemberDtor : public CFGImplicitDtor { 238b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 2393c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGMemberDtor(const FieldDecl *field) 2403c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGImplicitDtor(MemberDtor, field, 0) {} 2417c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 2423c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const FieldDecl *getFieldDecl() const { 2433c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return static_cast<const FieldDecl*>(Data1.getPointer()); 2447c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 2457c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 246fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 247fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 248fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGMemberDtor() {} 249fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &E) { 250fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return E.getKind() == MemberDtor; 251b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 252b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 253b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 2548599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski/// CFGTemporaryDtor - Represents C++ object destructor implicitly generated 2558599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski/// at the end of full expression for temporary object. 256b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGTemporaryDtor : public CFGImplicitDtor { 257b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 2583c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGTemporaryDtor(CXXBindTemporaryExpr *expr) 2593c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGImplicitDtor(TemporaryDtor, expr, 0) {} 2608599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski 2613c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const CXXBindTemporaryExpr *getBindTemporaryExpr() const { 2623c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return static_cast<const CXXBindTemporaryExpr *>(Data1.getPointer()); 2638599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski } 2648599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski 265fdf6a279c9a75c778eba382d9a156697092982a1David Blaikieprivate: 266fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie friend class CFGElement; 267fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie CFGTemporaryDtor() {} 268fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie static bool isKind(const CFGElement &E) { 269fdf6a279c9a75c778eba382d9a156697092982a1David Blaikie return E.getKind() == TemporaryDtor; 270b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 271852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek}; 272852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 2734ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// CFGTerminator - Represents CFGBlock terminator statement. 2744ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// 2754ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// TemporaryDtorsBranch bit is set to true if the terminator marks a branch 2764ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// in control flow of destructors of temporaries. In this case terminator 2774ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// statement is the same statement that branches control flow in evaluation 2784ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// of matching full expression. 2794ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderskiclass CFGTerminator { 2804ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski llvm::PointerIntPair<Stmt *, 1> Data; 2814ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderskipublic: 2824ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski CFGTerminator() {} 2834ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski CFGTerminator(Stmt *S, bool TemporaryDtorsBranch = false) 2844ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski : Data(S, TemporaryDtorsBranch) {} 2854ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 2864ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski Stmt *getStmt() { return Data.getPointer(); } 2874ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski const Stmt *getStmt() const { return Data.getPointer(); } 2884ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 2894ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski bool isTemporaryDtorsBranch() const { return Data.getInt(); } 2904ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 2914ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski operator Stmt *() { return getStmt(); } 2924ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski operator const Stmt *() const { return getStmt(); } 2934ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 2944ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski Stmt *operator->() { return getStmt(); } 2954ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski const Stmt *operator->() const { return getStmt(); } 2964ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 2974ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski Stmt &operator*() { return *getStmt(); } 2984ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski const Stmt &operator*() const { return *getStmt(); } 2994ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 3007247c88d1e41514a41085f83ebf03dd5220e054aDavid Blaikie LLVM_EXPLICIT operator bool() const { return getStmt(); } 3014ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski}; 3024ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 303fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFGBlock - Represents a single basic block in a source-level CFG. 304fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// It consists of: 305fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 306fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (1) A set of statements/expressions (which may contain subexpressions). 307fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (2) A "terminator" statement (not in the set of statements). 308fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (3) A list of successors and predecessors. 309fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 310fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Terminator: The terminator represents the type of control-flow that occurs 311fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// at the end of the basic block. The terminator is a Stmt* referring to an 312fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// AST node that has control-flow: if-statements, breaks, loops, etc. 313fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// If the control-flow is conditional, the condition expression will appear 314fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// within the set of statements in the block (usually the last statement). 315fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 316fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Predecessors: the order in the set of predecessors is arbitrary. 317fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 318fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Successors: the order in the set of successors is NOT arbitrary. We 319fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// currently have the following orderings based on the terminator: 320fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 321fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Terminator Successor Ordering 322fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// ----------------------------------------------------- 323fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// if Then Block; Else Block 3249cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek/// ? operator LHS expression; RHS expression 3259cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek/// &&, || expression that uses result of && or ||, RHS 326fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 3273cda937d4c015ff6070f1117024621a452cfadddTed Kremenek/// But note that any of that may be NULL in case of optimized-out edges. 3283cda937d4c015ff6070f1117024621a452cfadddTed Kremenek/// 329fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekclass CFGBlock { 330b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu class ElementList { 331852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef BumpVector<CFGElement> ImplTy; 3326c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek ImplTy Impl; 3336c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek public: 334b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu ElementList(BumpVectorContext &C) : Impl(C, 4) {} 335ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 3366c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef std::reverse_iterator<ImplTy::iterator> iterator; 3376c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef std::reverse_iterator<ImplTy::const_iterator> const_iterator; 3386c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef ImplTy::iterator reverse_iterator; 339ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie typedef ImplTy::const_iterator const_reverse_iterator; 340298038352b34c5503db418201f3ddea6e56fd0e1David Blaikie typedef ImplTy::const_reference const_reference; 341ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 342852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek void push_back(CFGElement e, BumpVectorContext &C) { Impl.push_back(e, C); } 34353de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski reverse_iterator insert(reverse_iterator I, size_t Cnt, CFGElement E, 3449c378f705405d37f49795d5e915989de774fe11fTed Kremenek BumpVectorContext &C) { 34553de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski return Impl.insert(I, Cnt, E, C); 34653de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 34753de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski 348298038352b34c5503db418201f3ddea6e56fd0e1David Blaikie const_reference front() const { return Impl.back(); } 349298038352b34c5503db418201f3ddea6e56fd0e1David Blaikie const_reference back() const { return Impl.front(); } 350ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 3516c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek iterator begin() { return Impl.rbegin(); } 3526c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek iterator end() { return Impl.rend(); } 3536c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_iterator begin() const { return Impl.rbegin(); } 3546c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_iterator end() const { return Impl.rend(); } 3556c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek reverse_iterator rbegin() { return Impl.begin(); } 3566c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek reverse_iterator rend() { return Impl.end(); } 3576c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_reverse_iterator rbegin() const { return Impl.begin(); } 3586c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_reverse_iterator rend() const { return Impl.end(); } 3596c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 360852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek CFGElement operator[](size_t i) const { 3616c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek assert(i < Impl.size()); 3626c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek return Impl[Impl.size() - 1 - i]; 3636c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek } 364ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 3656c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek size_t size() const { return Impl.size(); } 3666c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek bool empty() const { return Impl.empty(); } 3676c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek }; 3686c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 369fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// Stmts - The set of statements in the basic block. 370b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu ElementList Elements; 3719cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek 3729cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// Label - An (optional) label that prefixes the executable 3739cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// statements in the block. When this variable is non-NULL, it is 3744c45aa1b00b91847acfb082acfaced3ffa294d1dMike Stump /// either an instance of LabelStmt, SwitchCase or CXXCatchStmt. 3753575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek Stmt *Label; 3761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3779cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// Terminator - The terminator for a basic block that 378fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// indicates the type of control-flow that occurs between a block 379fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// and its successors. 3804ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski CFGTerminator Terminator; 3811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3823575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// LoopTarget - Some blocks are used to represent the "loop edge" to 3833575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// the start of a loop from within the loop body. This Stmt* will be 3843575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// refer to the loop statement for such blocks (and be null otherwise). 3851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Stmt *LoopTarget; 3861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 387fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// BlockID - A numerical ID assigned to a CFGBlock during construction 388fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// of the CFG. 389fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned BlockID; 3901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 391fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// Predecessors/Successors - Keep track of the predecessor / successor 392fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// CFG blocks. 393ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek typedef BumpVector<CFGBlock*> AdjacentBlocks; 394fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek AdjacentBlocks Preds; 395fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek AdjacentBlocks Succs; 3961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 39783754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// NoReturn - This bit is set when the basic block contains a function call 39883754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// or implicit destructor that is attributed as 'noreturn'. In that case, 39983754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// control cannot technically ever proceed past this block. All such blocks 40083754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// will have a single immediate successor: the exit block. This allows them 40183754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// to be easily reached from the exit block and using this bit quickly 40283754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// recognized without scanning the contents of the block. 40383754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// 40483754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// Optimization Note: This bit could be profitably folded with Terminator's 40583754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// storage if the memory usage of CFGBlock becomes an issue. 40683754162f698a5dafad93fb89be0953651a604d0Chandler Carruth unsigned HasNoReturnElement : 1; 40783754162f698a5dafad93fb89be0953651a604d0Chandler Carruth 40802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// Parent - The parent CFG that owns this CFGBlock. 40902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks CFG *Parent; 41002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 411fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekpublic: 41202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks explicit CFGBlock(unsigned blockid, BumpVectorContext &C, CFG *parent) 41302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks : Elements(C), Label(NULL), Terminator(NULL), LoopTarget(NULL), 41402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks BlockID(blockid), Preds(C, 1), Succs(C, 1), HasNoReturnElement(false), 41502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks Parent(parent) {} 4167177dee8aee4b432911c91f1b788963bec0cac9fDaniel Dunbar ~CFGBlock() {} 417fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 418fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // Statement iterators 419b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::iterator iterator; 420b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::const_iterator const_iterator; 421b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::reverse_iterator reverse_iterator; 422b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::const_reverse_iterator const_reverse_iterator; 4231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 424b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement front() const { return Elements.front(); } 425b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement back() const { return Elements.back(); } 4261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 427b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu iterator begin() { return Elements.begin(); } 428b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu iterator end() { return Elements.end(); } 429b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_iterator begin() const { return Elements.begin(); } 430b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_iterator end() const { return Elements.end(); } 431fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 432b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu reverse_iterator rbegin() { return Elements.rbegin(); } 433b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu reverse_iterator rend() { return Elements.rend(); } 434b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_reverse_iterator rbegin() const { return Elements.rbegin(); } 435b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_reverse_iterator rend() const { return Elements.rend(); } 4361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 437b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu unsigned size() const { return Elements.size(); } 438b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu bool empty() const { return Elements.empty(); } 439be7a7d6f2e5b86807afd08a568863df973baaa38Ted Kremenek 440b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement operator[](size_t i) const { return Elements[i]; } 4411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 442fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // CFG iterators 443fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::iterator pred_iterator; 444fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_iterator const_pred_iterator; 445fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::reverse_iterator pred_reverse_iterator; 446fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_reverse_iterator const_pred_reverse_iterator; 447fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 448fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::iterator succ_iterator; 449fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_iterator const_succ_iterator; 450fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::reverse_iterator succ_reverse_iterator; 451fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_reverse_iterator const_succ_reverse_iterator; 4521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 453fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_iterator pred_begin() { return Preds.begin(); } 454fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_iterator pred_end() { return Preds.end(); } 455fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_iterator pred_begin() const { return Preds.begin(); } 456fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_iterator pred_end() const { return Preds.end(); } 4571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 458fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_reverse_iterator pred_rbegin() { return Preds.rbegin(); } 4591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump pred_reverse_iterator pred_rend() { return Preds.rend(); } 460fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_reverse_iterator pred_rbegin() const { return Preds.rbegin(); } 461fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_reverse_iterator pred_rend() const { return Preds.rend(); } 462fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 4631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump succ_iterator succ_begin() { return Succs.begin(); } 464fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_iterator succ_end() { return Succs.end(); } 465fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_iterator succ_begin() const { return Succs.begin(); } 4661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_succ_iterator succ_end() const { return Succs.end(); } 4671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 468fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_reverse_iterator succ_rbegin() { return Succs.rbegin(); } 469fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_reverse_iterator succ_rend() { return Succs.rend(); } 470fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_reverse_iterator succ_rbegin() const { return Succs.rbegin(); } 471fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_reverse_iterator succ_rend() const { return Succs.rend(); } 472fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 473fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned succ_size() const { return Succs.size(); } 474fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek bool succ_empty() const { return Succs.empty(); } 475fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 476fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned pred_size() const { return Preds.size(); } 477fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek bool pred_empty() const { return Preds.empty(); } 4781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 479ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 480ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek class FilterOptions { 481ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek public: 482ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek FilterOptions() { 483ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek IgnoreDefaultsWithCoveredEnums = 0; 484be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek } 485ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 486ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek unsigned IgnoreDefaultsWithCoveredEnums : 1; 487ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek }; 488ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 489ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek static bool FilterEdge(const FilterOptions &F, const CFGBlock *Src, 490be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek const CFGBlock *Dst); 491ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 492ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek template <typename IMPL, bool IsPred> 493ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek class FilteredCFGBlockIterator { 494ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek private: 495ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek IMPL I, E; 496ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const FilterOptions F; 497ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const CFGBlock *From; 498ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek public: 499ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek explicit FilteredCFGBlockIterator(const IMPL &i, const IMPL &e, 500be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek const CFGBlock *from, 501be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek const FilterOptions &f) 502ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek : I(i), E(e), F(f), From(from) {} 503ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 504ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek bool hasMore() const { return I != E; } 505ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 506ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek FilteredCFGBlockIterator &operator++() { 507ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek do { ++I; } while (hasMore() && Filter(*I)); 508ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return *this; 509ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 510ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 511ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const CFGBlock *operator*() const { return *I; } 512ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek private: 513ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek bool Filter(const CFGBlock *To) { 514ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return IsPred ? FilterEdge(F, To, From) : FilterEdge(F, From, To); 515ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 516ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek }; 517ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 518ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek typedef FilteredCFGBlockIterator<const_pred_iterator, true> 519ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_pred_iterator; 520ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 521ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek typedef FilteredCFGBlockIterator<const_succ_iterator, false> 522ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_succ_iterator; 523ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 524ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_pred_iterator filtered_pred_start_end(const FilterOptions &f) const { 525ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return filtered_pred_iterator(pred_begin(), pred_end(), this, f); 526ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 527ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 528ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_succ_iterator filtered_succ_start_end(const FilterOptions &f) const { 529ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return filtered_succ_iterator(succ_begin(), succ_end(), this, f); 530ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 531ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 532fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // Manipulation of block contents 5331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5349c378f705405d37f49795d5e915989de774fe11fTed Kremenek void setTerminator(Stmt *Statement) { Terminator = Statement; } 5359c378f705405d37f49795d5e915989de774fe11fTed Kremenek void setLabel(Stmt *Statement) { Label = Statement; } 5363575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek void setLoopTarget(const Stmt *loopTarget) { LoopTarget = loopTarget; } 53783754162f698a5dafad93fb89be0953651a604d0Chandler Carruth void setHasNoReturnElement() { HasNoReturnElement = true; } 5389cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek 5394ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski CFGTerminator getTerminator() { return Terminator; } 5404ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski const CFGTerminator getTerminator() const { return Terminator; } 5411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5429c378f705405d37f49795d5e915989de774fe11fTed Kremenek Stmt *getTerminatorCondition(); 5431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5449c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *getTerminatorCondition() const { 545411cdee0b490f79428c9eb977f25199eb7d21cd8Ted Kremenek return const_cast<CFGBlock*>(this)->getTerminatorCondition(); 546411cdee0b490f79428c9eb977f25199eb7d21cd8Ted Kremenek } 5471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5483575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek const Stmt *getLoopTarget() const { return LoopTarget; } 5491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5509c378f705405d37f49795d5e915989de774fe11fTed Kremenek Stmt *getLabel() { return Label; } 5519c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *getLabel() const { return Label; } 5521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 55383754162f698a5dafad93fb89be0953651a604d0Chandler Carruth bool hasNoReturnElement() const { return HasNoReturnElement; } 55483754162f698a5dafad93fb89be0953651a604d0Chandler Carruth 555fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned getBlockID() const { return BlockID; } 5561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 55702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks CFG *getParent() const { return Parent; } 55802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 559682060c5d95f6e4f79536013781ab0870cdd3850Ted Kremenek void dump(const CFG *cfg, const LangOptions &LO, bool ShowColors = false) const; 560682060c5d95f6e4f79536013781ab0870cdd3850Ted Kremenek void print(raw_ostream &OS, const CFG* cfg, const LangOptions &LO, 561682060c5d95f6e4f79536013781ab0870cdd3850Ted Kremenek bool ShowColors) const; 5628cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner void printTerminator(raw_ostream &OS, const LangOptions &LO) const; 563ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 5649c378f705405d37f49795d5e915989de774fe11fTed Kremenek void addSuccessor(CFGBlock *Block, BumpVectorContext &C) { 565ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek if (Block) 566ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek Block->Preds.push_back(this, C); 567ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek Succs.push_back(Block, C); 568ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek } 569ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 5709c378f705405d37f49795d5e915989de774fe11fTed Kremenek void appendStmt(Stmt *statement, BumpVectorContext &C) { 571892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek Elements.push_back(CFGStmt(statement), C); 572079bd72439448b78629a28da6b1f8abe2cdeaf4dMike Stump } 57382bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski 574cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt void appendInitializer(CXXCtorInitializer *initializer, 5759c378f705405d37f49795d5e915989de774fe11fTed Kremenek BumpVectorContext &C) { 576892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek Elements.push_back(CFGInitializer(initializer), C); 57782bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski } 57882bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski 5797c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski void appendBaseDtor(const CXXBaseSpecifier *BS, BumpVectorContext &C) { 5807c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski Elements.push_back(CFGBaseDtor(BS), C); 5817c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 5827c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 5837c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski void appendMemberDtor(FieldDecl *FD, BumpVectorContext &C) { 5847c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski Elements.push_back(CFGMemberDtor(FD), C); 5857c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 586ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 5878599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski void appendTemporaryDtor(CXXBindTemporaryExpr *E, BumpVectorContext &C) { 5888599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski Elements.push_back(CFGTemporaryDtor(E), C); 5898599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski } 5907c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 591c8cfc74bdcc999828bc232294d937fb191940d5bChandler Carruth void appendAutomaticObjDtor(VarDecl *VD, Stmt *S, BumpVectorContext &C) { 592c8cfc74bdcc999828bc232294d937fb191940d5bChandler Carruth Elements.push_back(CFGAutomaticObjDtor(VD, S), C); 593c8cfc74bdcc999828bc232294d937fb191940d5bChandler Carruth } 594c8cfc74bdcc999828bc232294d937fb191940d5bChandler Carruth 59536d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose void appendDeleteDtor(CXXRecordDecl *RD, CXXDeleteExpr *DE, BumpVectorContext &C) { 59636d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose Elements.push_back(CFGDeleteDtor(RD, DE), C); 59736d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose } 59836d558d85653315edb389677e995ec9ccdbfbf3dJordan Rose 59953de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // Destructors must be inserted in reversed order. So insertion is in two 60053de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // steps. First we prepare space for some number of elements, then we insert 60153de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // the elements beginning at the last position in prepared space. 60253de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski iterator beginAutomaticObjDtorsInsert(iterator I, size_t Cnt, 6039c378f705405d37f49795d5e915989de774fe11fTed Kremenek BumpVectorContext &C) { 604b07805485c603be3d8011f72611465324c9e664bDavid Blaikie return iterator(Elements.insert(I.base(), Cnt, CFGAutomaticObjDtor(0, 0), C)); 60553de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 6069c378f705405d37f49795d5e915989de774fe11fTed Kremenek iterator insertAutomaticObjDtor(iterator I, VarDecl *VD, Stmt *S) { 60753de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski *I = CFGAutomaticObjDtor(VD, S); 60853de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski return ++I; 60953de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 610fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek}; 6111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 612fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFG - Represents a source-level, intra-procedural CFG that represents the 613fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// control-flow of a Stmt. The Stmt can represent an entire function body, 614fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// or a single expression. A CFG will always contain one empty block that 615fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// represents the Exit point of the CFG. A CFG will also contain a designated 616fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Entry block. The CFG solely represents control-flow; it consists of 617fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFGBlocks which are simply containers of Stmt*'s in the AST the CFG 618fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// was constructed from. 619fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekclass CFG { 620fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekpublic: 621a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 622a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Construction & Manipulation. 623a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 624a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 6256c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek class BuildOptions { 626681ab8998793899076bae9cd6383a5d78b8ee1acBenjamin Kramer std::bitset<Stmt::lastStmtConstant> alwaysAddMask; 6276c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek public: 6280d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek typedef llvm::DenseMap<const Stmt *, const CFGBlock*> ForcedBlkExprs; 629ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie ForcedBlkExprs **forcedBlkExprs; 630b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek 631bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek bool PruneTriviallyFalseEdges; 632bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek bool AddEHEdges; 633bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek bool AddInitializers; 634bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek bool AddImplicitDtors; 6355a1ffe98b04120846a15f7105905b5f363b08635Jordan Rose bool AddTemporaryDtors; 636fbd4b5dc7febd1d8b4fa64ab00a29d72b44bec7bTed Kremenek bool AddStaticInitBranches; 637ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 63874fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek bool alwaysAdd(const Stmt *stmt) const { 63974fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek return alwaysAddMask[stmt->getStmtClass()]; 64074fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek } 641ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 642882998923889a2fcce9b49696506c499e22cf38fTed Kremenek BuildOptions &setAlwaysAdd(Stmt::StmtClass stmtClass, bool val = true) { 643882998923889a2fcce9b49696506c499e22cf38fTed Kremenek alwaysAddMask[stmtClass] = val; 644882998923889a2fcce9b49696506c499e22cf38fTed Kremenek return *this; 645882998923889a2fcce9b49696506c499e22cf38fTed Kremenek } 646ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 647882998923889a2fcce9b49696506c499e22cf38fTed Kremenek BuildOptions &setAllAlwaysAdd() { 648882998923889a2fcce9b49696506c499e22cf38fTed Kremenek alwaysAddMask.set(); 649bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek return *this; 65074fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek } 6516c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek 6526c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek BuildOptions() 653681ab8998793899076bae9cd6383a5d78b8ee1acBenjamin Kramer : forcedBlkExprs(0), PruneTriviallyFalseEdges(true) 65474fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek ,AddEHEdges(false) 65574fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek ,AddInitializers(false) 6565a1ffe98b04120846a15f7105905b5f363b08635Jordan Rose ,AddImplicitDtors(false) 657fbd4b5dc7febd1d8b4fa64ab00a29d72b44bec7bTed Kremenek ,AddTemporaryDtors(false) 658fbd4b5dc7febd1d8b4fa64ab00a29d72b44bec7bTed Kremenek ,AddStaticInitBranches(false) {} 6596c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek }; 6606c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek 66102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// \brief Provides a custom implementation of the iterator class to have the 66202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// same interface as Function::iterator - iterator returns CFGBlock 66302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// (not a pointer to CFGBlock). 66402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks class graph_iterator { 66502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks public: 66602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef const CFGBlock value_type; 66702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef value_type& reference; 66802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef value_type* pointer; 66902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef BumpVector<CFGBlock*>::iterator ImplTy; 67002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 67102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks graph_iterator(const ImplTy &i) : I(i) {} 67202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 67302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks bool operator==(const graph_iterator &X) const { return I == X.I; } 67402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks bool operator!=(const graph_iterator &X) const { return I != X.I; } 67502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 67602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks reference operator*() const { return **I; } 67702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks pointer operator->() const { return *I; } 67802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks operator CFGBlock* () { return *I; } 67902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 68002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks graph_iterator &operator++() { ++I; return *this; } 68102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks graph_iterator &operator--() { --I; return *this; } 68202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 68302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks private: 68402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks ImplTy I; 68502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks }; 68602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 68702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks class const_graph_iterator { 68802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks public: 68902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef const CFGBlock value_type; 69002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef value_type& reference; 69102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef value_type* pointer; 69202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef BumpVector<CFGBlock*>::const_iterator ImplTy; 69302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 69402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks const_graph_iterator(const ImplTy &i) : I(i) {} 69502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 69602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks bool operator==(const const_graph_iterator &X) const { return I == X.I; } 69702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks bool operator!=(const const_graph_iterator &X) const { return I != X.I; } 69802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 69902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks reference operator*() const { return **I; } 70002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks pointer operator->() const { return *I; } 70102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks operator CFGBlock* () const { return *I; } 70202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 70302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks const_graph_iterator &operator++() { ++I; return *this; } 70402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks const_graph_iterator &operator--() { --I; return *this; } 70502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 70602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks private: 70702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks ImplTy I; 70802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks }; 70902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 710a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// buildCFG - Builds a CFG from an AST. The responsibility to free the 7111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// constructed CFG belongs to the caller. 7129c378f705405d37f49795d5e915989de774fe11fTed Kremenek static CFG* buildCFG(const Decl *D, Stmt *AST, ASTContext *C, 713b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek const BuildOptions &BO); 7141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 715a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// createBlock - Create a new block in the CFG. The CFG owns the block; 716a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// the caller should not directly free it. 7179c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock *createBlock(); 7181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 719a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// setEntry - Set the entry block of the CFG. This is typically used 720a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// only during CFG construction. Most CFG clients expect that the 721a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// entry block has no predecessors and contains no statements. 722a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek void setEntry(CFGBlock *B) { Entry = B; } 7231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 724e38158de9236dfcded7da56126134e5e3e49cb01Ted Kremenek /// setIndirectGotoBlock - Set the block used for indirect goto jumps. 725e38158de9236dfcded7da56126134e5e3e49cb01Ted Kremenek /// This is typically used only during CFG construction. 7269c378f705405d37f49795d5e915989de774fe11fTed Kremenek void setIndirectGotoBlock(CFGBlock *B) { IndirectGotoBlock = B; } 7271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 728a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 729a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // Block Iterators 730a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 731a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 732ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie typedef BumpVector<CFGBlock*> CFGBlockListTy; 733a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef CFGBlockListTy::iterator iterator; 734a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef CFGBlockListTy::const_iterator const_iterator; 735a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef std::reverse_iterator<iterator> reverse_iterator; 736a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 737fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 7389c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock & front() { return *Blocks.front(); } 7399c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock & back() { return *Blocks.back(); } 7401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 74119bb356317952445b03ee341c02f6147083c9eeaTed Kremenek iterator begin() { return Blocks.begin(); } 74219bb356317952445b03ee341c02f6147083c9eeaTed Kremenek iterator end() { return Blocks.end(); } 74319bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_iterator begin() const { return Blocks.begin(); } 7441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_iterator end() const { return Blocks.end(); } 7451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 74602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks graph_iterator nodes_begin() { return graph_iterator(Blocks.begin()); } 74702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks graph_iterator nodes_end() { return graph_iterator(Blocks.end()); } 74802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks const_graph_iterator nodes_begin() const { 74902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return const_graph_iterator(Blocks.begin()); 75002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks } 75102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks const_graph_iterator nodes_end() const { 75202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return const_graph_iterator(Blocks.end()); 75302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks } 75402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 75519bb356317952445b03ee341c02f6147083c9eeaTed Kremenek reverse_iterator rbegin() { return Blocks.rbegin(); } 75619bb356317952445b03ee341c02f6147083c9eeaTed Kremenek reverse_iterator rend() { return Blocks.rend(); } 75719bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_reverse_iterator rbegin() const { return Blocks.rbegin(); } 75819bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_reverse_iterator rend() const { return Blocks.rend(); } 7591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7609c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock & getEntry() { return *Entry; } 7619c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock & getEntry() const { return *Entry; } 7629c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock & getExit() { return *Exit; } 7639c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock & getExit() const { return *Exit; } 7647dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 7659c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock * getIndirectGotoBlock() { return IndirectGotoBlock; } 7669c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock * getIndirectGotoBlock() const { return IndirectGotoBlock; } 767ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 768f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek typedef std::vector<const CFGBlock*>::const_iterator try_block_iterator; 769f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek try_block_iterator try_blocks_begin() const { 770f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek return TryDispatchBlocks.begin(); 771f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek } 772f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek try_block_iterator try_blocks_end() const { 773f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek return TryDispatchBlocks.end(); 774f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek } 775ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 776f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek void addTryDispatchBlock(const CFGBlock *block) { 777f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek TryDispatchBlocks.push_back(block); 778f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek } 7791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 78049a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// Records a synthetic DeclStmt and the DeclStmt it was constructed from. 78149a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// 78249a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// The CFG uses synthetic DeclStmts when a single AST DeclStmt contains 78349a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// multiple decls. 78449a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose void addSyntheticDeclStmt(const DeclStmt *Synthetic, 78549a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose const DeclStmt *Source) { 78649a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose assert(Synthetic->isSingleDecl() && "Can handle single declarations only"); 78749a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose assert(Synthetic != Source && "Don't include original DeclStmts in map"); 78849a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose assert(!SyntheticDeclStmts.count(Synthetic) && "Already in map"); 78949a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose SyntheticDeclStmts[Synthetic] = Source; 79049a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose } 79149a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose 79249a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose typedef llvm::DenseMap<const DeclStmt *, const DeclStmt *>::const_iterator 79349a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose synthetic_stmt_iterator; 79449a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose 79549a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// Iterates over synthetic DeclStmts in the CFG. 79649a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// 79749a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// Each element is a (synthetic statement, source statement) pair. 79849a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// 79949a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// \sa addSyntheticDeclStmt 80049a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose synthetic_stmt_iterator synthetic_stmt_begin() const { 80149a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose return SyntheticDeclStmts.begin(); 80249a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose } 80349a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose 80449a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// \sa synthetic_stmt_begin 80549a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose synthetic_stmt_iterator synthetic_stmt_end() const { 80649a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose return SyntheticDeclStmts.end(); 80749a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose } 80849a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose 809a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 810a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek // Member templates useful for various batch operations over CFGs. 811a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek //===--------------------------------------------------------------------===// 8121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 813a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek template <typename CALLBACK> 814a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek void VisitBlockStmts(CALLBACK& O) const { 815a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek for (const_iterator I=begin(), E=end(); I != E; ++I) 816ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek for (CFGBlock::const_iterator BI=(*I)->begin(), BE=(*I)->end(); 817b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu BI != BE; ++BI) { 818b07805485c603be3d8011f72611465324c9e664bDavid Blaikie if (Optional<CFGStmt> stmt = BI->getAs<CFGStmt>()) 819b07805485c603be3d8011f72611465324c9e664bDavid Blaikie O(const_cast<Stmt*>(stmt->getStmt())); 820b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 8211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 8221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 823a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek //===--------------------------------------------------------------------===// 824a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Introspection. 825a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 826a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 8270c8c5365be0176e8399e97d7da3293c79bc9da24Mike Stump /// getNumBlockIDs - Returns the total number of BlockIDs allocated (which 8280c8c5365be0176e8399e97d7da3293c79bc9da24Mike Stump /// start at 0). 8299438252ad2ecae5338df565ca33c6969e4fbfa41Ted Kremenek unsigned getNumBlockIDs() const { return NumBlockIDs; } 830a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 83102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// size - Return the total number of CFGBlocks within the CFG 83202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// This is simply a renaming of the getNumBlockIDs(). This is necessary 83302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks /// because the dominator implementation needs such an interface. 83402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks unsigned size() const { return NumBlockIDs; } 83502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 836a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 837a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Debugging: Pretty-Printing and Visualization. 838a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 839a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 840e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void viewCFG(const LangOptions &LO) const; 841682060c5d95f6e4f79536013781ab0870cdd3850Ted Kremenek void print(raw_ostream &OS, const LangOptions &LO, bool ShowColors) const; 842682060c5d95f6e4f79536013781ab0870cdd3850Ted Kremenek void dump(const LangOptions &LO, bool ShowColors) const; 843a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 844a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 845a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // Internal: constructors and data. 846a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 847a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 8481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CFG() : Entry(NULL), Exit(NULL), IndirectGotoBlock(NULL), NumBlockIDs(0), 849d049b40ef411eee12a735233dbe04fdc42c67e1aJordan Rose Blocks(BlkBVC, 10) {} 8501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 851ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek llvm::BumpPtrAllocator& getAllocator() { 852ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek return BlkBVC.getAllocator(); 853ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek } 854ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 855ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek BumpVectorContext &getBumpVectorContext() { 856ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek return BlkBVC; 857ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek } 8581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 859a36c6540346266f570b2fc7457950dea45d89988Ted Kremenekprivate: 8609c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock *Entry; 8619c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock *Exit; 862a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* IndirectGotoBlock; // Special block to contain collective dispatch 863ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek // for indirect gotos 86463f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek unsigned NumBlockIDs; 8651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 866ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek BumpVectorContext BlkBVC; 867ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 868ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek CFGBlockListTy Blocks; 869ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 870f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek /// C++ 'try' statements are modeled with an indirect dispatch block. 871f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek /// This is the collection of such blocks present in the CFG. 872f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek std::vector<const CFGBlock *> TryDispatchBlocks; 8731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 87449a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// Collects DeclStmts synthesized for this CFG and maps each one back to its 87549a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose /// source DeclStmt. 87649a246f4fad959888bb0164c624c3c2b03078e91Jordan Rose llvm::DenseMap<const DeclStmt *, const DeclStmt *> SyntheticDeclStmts; 877fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek}; 878fa2be43dbd6fdc4414e261db69aaf35dfb21a416Ted Kremenek} // end namespace clang 8797dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 8807dba8607e59096014b7139ff20ef00870041d518Ted Kremenek//===----------------------------------------------------------------------===// 8817dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// GraphTraits specializations for CFG basic block graphs (source-level CFGs) 8827dba8607e59096014b7139ff20ef00870041d518Ted Kremenek//===----------------------------------------------------------------------===// 8837dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 8847dba8607e59096014b7139ff20ef00870041d518Ted Kremeneknamespace llvm { 8857dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 8864ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// Implement simplify_type for CFGTerminator, so that we can dyn_cast from 8874ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// CFGTerminator to a specific Stmt class. 8884ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderskitemplate <> struct simplify_type< ::clang::CFGTerminator> { 8894ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski typedef ::clang::Stmt *SimpleType; 89094cf910ac2d1719c1dfc163bbec3953f12efdf6fRafael Espindola static SimpleType getSimplifiedValue(::clang::CFGTerminator Val) { 891e81fdb1fdde48d3fa18df56c5797f6b0bc5dfc4aRafael Espindola return Val.getStmt(); 8924ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski } 8934ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski}; 8944ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 8957dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// Traits for: CFGBlock 8967dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 8979c378f705405d37f49795d5e915989de774fe11fTed Kremenektemplate <> struct GraphTraits< ::clang::CFGBlock *> { 898852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock NodeType; 899852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::succ_iterator ChildIteratorType; 9001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9019c378f705405d37f49795d5e915989de774fe11fTed Kremenek static NodeType* getEntryNode(::clang::CFGBlock *BB) 9027dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return BB; } 9037dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 9047dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 9057dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_begin(); } 9061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9077dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 9087dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_end(); } 9097dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 9107dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 9119c378f705405d37f49795d5e915989de774fe11fTed Kremenektemplate <> struct GraphTraits< const ::clang::CFGBlock *> { 912852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef const ::clang::CFGBlock NodeType; 913852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::const_succ_iterator ChildIteratorType; 9141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9159c378f705405d37f49795d5e915989de774fe11fTed Kremenek static NodeType* getEntryNode(const clang::CFGBlock *BB) 9167dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return BB; } 9171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9187dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 9197dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_begin(); } 9201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9217dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 9227dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_end(); } 9237dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 9247dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 92502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zakstemplate <> struct GraphTraits<Inverse< ::clang::CFGBlock*> > { 92602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef ::clang::CFGBlock NodeType; 92702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef ::clang::CFGBlock::const_pred_iterator ChildIteratorType; 92802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 92902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static NodeType *getEntryNode(Inverse< ::clang::CFGBlock*> G) 93002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks { return G.Graph; } 93102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 93202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static inline ChildIteratorType child_begin(NodeType* N) 93302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks { return N->pred_begin(); } 93402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 93502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static inline ChildIteratorType child_end(NodeType* N) 93602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks { return N->pred_end(); } 93702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks}; 93802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 939852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<Inverse<const ::clang::CFGBlock*> > { 940852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef const ::clang::CFGBlock NodeType; 941852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::const_pred_iterator ChildIteratorType; 9427dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 943852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode(Inverse<const ::clang::CFGBlock*> G) 9447dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return G.Graph; } 9457dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 9467dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 9477dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->pred_begin(); } 9481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9497dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 9507dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->pred_end(); } 9517dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 9527dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 9537dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// Traits for: CFG 9547dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 955852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits< ::clang::CFG* > 9569c378f705405d37f49795d5e915989de774fe11fTed Kremenek : public GraphTraits< ::clang::CFGBlock *> { 9577dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 95802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef ::clang::CFG::graph_iterator nodes_iterator; 9591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static NodeType *getEntryNode(::clang::CFG* F) { return &F->getEntry(); } 96102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static nodes_iterator nodes_begin(::clang::CFG* F) { return F->nodes_begin();} 96202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static nodes_iterator nodes_end(::clang::CFG* F) { return F->nodes_end(); } 96302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static unsigned size(::clang::CFG* F) { return F->size(); } 9647dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 9657dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 966852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<const ::clang::CFG* > 9679c378f705405d37f49795d5e915989de774fe11fTed Kremenek : public GraphTraits<const ::clang::CFGBlock *> { 9687dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 96902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef ::clang::CFG::const_graph_iterator nodes_iterator; 9707dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 971852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode( const ::clang::CFG* F) { 972852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return &F->getEntry(); 973852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 974852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_begin( const ::clang::CFG* F) { 97502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return F->nodes_begin(); 976852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 977852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_end( const ::clang::CFG* F) { 97802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return F->nodes_end(); 979852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 98002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static unsigned size(const ::clang::CFG* F) { 98102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return F->size(); 98202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks } 98302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks}; 98402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 98502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zakstemplate <> struct GraphTraits<Inverse< ::clang::CFG*> > 98602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks : public GraphTraits<Inverse< ::clang::CFGBlock*> > { 98702f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 98802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef ::clang::CFG::graph_iterator nodes_iterator; 98902f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks 99002f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static NodeType *getEntryNode( ::clang::CFG* F) { return &F->getExit(); } 99102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static nodes_iterator nodes_begin( ::clang::CFG* F) {return F->nodes_begin();} 99202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static nodes_iterator nodes_end( ::clang::CFG* F) { return F->nodes_end(); } 9937dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 9947dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 995852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<Inverse<const ::clang::CFG*> > 996852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek : public GraphTraits<Inverse<const ::clang::CFGBlock*> > { 9977dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 99802f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks typedef ::clang::CFG::const_graph_iterator nodes_iterator; 9997dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 1000852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode(const ::clang::CFG* F) { return &F->getExit(); } 100102f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static nodes_iterator nodes_begin(const ::clang::CFG* F) { 100202f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return F->nodes_begin(); 100302f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks } 100402f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks static nodes_iterator nodes_end(const ::clang::CFG* F) { 100502f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks return F->nodes_end(); 100602f34c5003b2c5067675f89ffce0a84c28faf722Anna Zaks } 10077dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 10087dba8607e59096014b7139ff20ef00870041d518Ted Kremenek} // end llvm namespace 1009cd881d534517f09a2fae10445f9b865f49ccc6c8Ted Kremenek#endif 1010