CFG.h revision 7c625d8ffc20b92fff9e1690cd2484fcb6498183
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 18852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek#include "llvm/ADT/PointerIntPair.h" 197dba8607e59096014b7139ff20ef00870041d518Ted Kremenek#include "llvm/ADT/GraphTraits.h" 20ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek#include "llvm/Support/Allocator.h" 21852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek#include "llvm/Support/Casting.h" 22ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek#include "clang/Analysis/Support/BumpVector.h" 23079bd72439448b78629a28da6b1f8abe2cdeaf4dMike Stump#include "clang/Basic/SourceLocation.h" 24c1581a0d64b0ee4f822ed2fca4442a111d03569aHartmut Kaiser#include <cassert> 25fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 26e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattnernamespace llvm { 27e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner class raw_ostream; 28e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner} 292a4cd498ff9b2b126de3e370b768ab307c221ab8Marcin Swiderski 30fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremeneknamespace clang { 31b978a441c7d8bf59e7fede938e1f3b672573b443Mike Stump class Decl; 3242a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class Stmt; 3363f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek class Expr; 347c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski class FieldDecl; 351cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski class VarDecl; 361cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski class CXXBaseOrMemberInitializer; 377c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski class CXXBaseSpecifier; 3842a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class CFG; 3942a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class PrinterHelper; 40e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner class LangOptions; 41e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump class ASTContext; 42e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump 43852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek/// CFGElement - Represents a top-level expression in a basic block. 44852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenekclass CFGElement { 45852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenekpublic: 46b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu enum Kind { 47b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // main kind 48b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Statement, 49b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu StatementAsLValue, 50b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Initializer, 51b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Dtor, 52b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // dtor kind 53b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu AutomaticObjectDtor, 54b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu BaseDtor, 55b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu MemberDtor, 56b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu TemporaryDtor, 57b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu DTOR_BEGIN = AutomaticObjectDtor 58b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu }; 59b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 60b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuprotected: 61b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // The int bits are used to mark the main kind. 62b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu llvm::PointerIntPair<void *, 2> Data1; 63b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // The int bits are used to mark the dtor kind. 64b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu llvm::PointerIntPair<void *, 2> Data2; 65b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 661cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGElement(void *Ptr, unsigned Int) : Data1(Ptr, Int) {} 671cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGElement(void *Ptr1, unsigned Int1, void *Ptr2, unsigned Int2) 681cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski : Data1(Ptr1, Int1), Data2(Ptr2, Int2) {} 691cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 70b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 71b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement() {} 72b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 73b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Kind getKind() const { return static_cast<Kind>(Data1.getInt()); } 74b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 75b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Kind getDtorKind() const { 76b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu assert(getKind() == Dtor); 77b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return static_cast<Kind>(Data2.getInt() + DTOR_BEGIN); 78b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 79b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 80b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu bool isValid() const { return Data1.getPointer(); } 81b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 82b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu operator bool() const { return isValid(); } 83b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 84b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu template<class ElemTy> ElemTy getAs() const { 85b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu if (llvm::isa<ElemTy>(this)) 86b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return *static_cast<const ElemTy*>(this); 87b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return ElemTy(); 88b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 89b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 90b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { return true; } 91b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 92b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 93b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGStmt : public CFGElement { 94b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 95b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGStmt() {} 96b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGStmt(Stmt *S, bool asLValue) : CFGElement(S, asLValue) {} 97b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 98b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Stmt *getStmt() const { return static_cast<Stmt *>(Data1.getPointer()); } 99b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 100852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek operator Stmt*() const { return getStmt(); } 101b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 102b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu bool asLValue() const { 103b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return static_cast<Kind>(Data1.getInt()) == StatementAsLValue; 104b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 105b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 106b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 107b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Statement || E->getKind() == StatementAsLValue; 108b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 109b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 110b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1111cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// CFGInitializer - Represents C++ base or member initializer from 1121cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// constructor's initialization list. 113b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGInitializer : public CFGElement { 114b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1151cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGInitializer() {} 1161cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGInitializer(CXXBaseOrMemberInitializer* I) 1171cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski : CFGElement(I, Initializer) {} 1181cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 1191cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CXXBaseOrMemberInitializer* getInitializer() const { 1201cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski return static_cast<CXXBaseOrMemberInitializer*>(Data1.getPointer()); 1211cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 1221cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski operator CXXBaseOrMemberInitializer*() const { return getInitializer(); } 1231cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 124b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 125b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Initializer; 126b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 127b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 128b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 12953de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski/// CFGImplicitDtor - Represents C++ object destructor implicitly generated 1301cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// by compiler on various occasions. 131b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGImplicitDtor : public CFGElement { 1321cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderskiprotected: 1331cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGImplicitDtor(unsigned K, void* P, void* S) 1341cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski : CFGElement(P, Dtor, S, K - DTOR_BEGIN) {} 1351cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 136b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1371cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGImplicitDtor() {} 1381cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 139b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 140b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Dtor; 141b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 142b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 143b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1447c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// CFGAutomaticObjDtor - Represents C++ object destructor implicitly generated 1451cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// for automatic object or temporary bound to const reference at the point 1461cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// of leaving its local scope. 147b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGAutomaticObjDtor: public CFGImplicitDtor { 148b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1491cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGAutomaticObjDtor() {} 1501cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGAutomaticObjDtor(VarDecl* VD, Stmt* S) 1511cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski : CFGImplicitDtor(AutomaticObjectDtor, VD, S) {} 1521cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 1531cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski VarDecl* getVarDecl() const { 1541cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski return static_cast<VarDecl*>(Data1.getPointer()); 1551cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 1561cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 1571cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski // Get statement end of which triggered the destructor call. 1581cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski Stmt* getTriggerStmt() const { 1591cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski return static_cast<Stmt*>(Data2.getPointer()); 1601cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 1611cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 162b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 163b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Dtor && E->getDtorKind() == AutomaticObjectDtor; 164b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 165b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 166b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1677c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// CFGBaseDtor - Represents C++ object destructor implicitly generated for 1687c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// base object in destructor. 169b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGBaseDtor : public CFGImplicitDtor { 170b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1717c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski CFGBaseDtor() {} 1727c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski CFGBaseDtor(const CXXBaseSpecifier *BS) 1737c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski : CFGImplicitDtor(BaseDtor, const_cast<CXXBaseSpecifier*>(BS), NULL) {} 1747c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 1757c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski const CXXBaseSpecifier *getBaseSpecifier() const { 1767c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski return static_cast<const CXXBaseSpecifier*>(Data1.getPointer()); 1777c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 1787c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 179b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 180b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Dtor && E->getDtorKind() == BaseDtor; 181b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 182b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 183b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1847c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// CFGMemberDtor - Represents C++ object destructor implicitly generated for 1857c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// member object in destructor. 186b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGMemberDtor : public CFGImplicitDtor { 187b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1887c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski CFGMemberDtor() {} 1897c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski CFGMemberDtor(FieldDecl *FD) 1907c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski : CFGImplicitDtor(MemberDtor, FD, NULL) {} 1917c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 1927c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski FieldDecl *getFieldDecl() const { 1937c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski return static_cast<FieldDecl*>(Data1.getPointer()); 1947c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 1957c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 196b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 197b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Dtor && E->getDtorKind() == MemberDtor; 198b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 199b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 200b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 201b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGTemporaryDtor : public CFGImplicitDtor { 202b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 203b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 204b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Dtor && E->getDtorKind() == TemporaryDtor; 205b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 206852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek}; 207852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 208fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFGBlock - Represents a single basic block in a source-level CFG. 209fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// It consists of: 210fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 211fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (1) A set of statements/expressions (which may contain subexpressions). 212fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (2) A "terminator" statement (not in the set of statements). 213fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (3) A list of successors and predecessors. 214fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 215fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Terminator: The terminator represents the type of control-flow that occurs 216fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// at the end of the basic block. The terminator is a Stmt* referring to an 217fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// AST node that has control-flow: if-statements, breaks, loops, etc. 218fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// If the control-flow is conditional, the condition expression will appear 219fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// within the set of statements in the block (usually the last statement). 220fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 221fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Predecessors: the order in the set of predecessors is arbitrary. 222fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 223fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Successors: the order in the set of successors is NOT arbitrary. We 224fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// currently have the following orderings based on the terminator: 225fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 226fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Terminator Successor Ordering 227fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// ----------------------------------------------------- 228fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// if Then Block; Else Block 2299cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek/// ? operator LHS expression; RHS expression 2309cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek/// &&, || expression that uses result of && or ||, RHS 231fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 232fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekclass CFGBlock { 233b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu class ElementList { 234852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef BumpVector<CFGElement> ImplTy; 2356c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek ImplTy Impl; 2366c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek public: 237b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu ElementList(BumpVectorContext &C) : Impl(C, 4) {} 238ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek 2396c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef std::reverse_iterator<ImplTy::iterator> iterator; 2406c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef std::reverse_iterator<ImplTy::const_iterator> const_iterator; 2416c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef ImplTy::iterator reverse_iterator; 2426c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef ImplTy::const_iterator const_reverse_iterator; 2436c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 244852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek void push_back(CFGElement e, BumpVectorContext &C) { Impl.push_back(e, C); } 24553de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski reverse_iterator insert(reverse_iterator I, size_t Cnt, CFGElement E, 24653de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski BumpVectorContext& C) { 24753de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski return Impl.insert(I, Cnt, E, C); 24853de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 24953de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski 250852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek CFGElement front() const { return Impl.back(); } 251852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek CFGElement back() const { return Impl.front(); } 2526c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 2536c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek iterator begin() { return Impl.rbegin(); } 2546c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek iterator end() { return Impl.rend(); } 2556c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_iterator begin() const { return Impl.rbegin(); } 2566c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_iterator end() const { return Impl.rend(); } 2576c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek reverse_iterator rbegin() { return Impl.begin(); } 2586c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek reverse_iterator rend() { return Impl.end(); } 2596c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_reverse_iterator rbegin() const { return Impl.begin(); } 2606c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_reverse_iterator rend() const { return Impl.end(); } 2616c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 262852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek CFGElement operator[](size_t i) const { 2636c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek assert(i < Impl.size()); 2646c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek return Impl[Impl.size() - 1 - i]; 2656c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek } 2666c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 2676c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek size_t size() const { return Impl.size(); } 2686c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek bool empty() const { return Impl.empty(); } 2696c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek }; 2706c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 271fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// Stmts - The set of statements in the basic block. 272b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu ElementList Elements; 2739cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek 2749cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// Label - An (optional) label that prefixes the executable 2759cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// statements in the block. When this variable is non-NULL, it is 2764c45aa1b00b91847acfb082acfaced3ffa294d1dMike Stump /// either an instance of LabelStmt, SwitchCase or CXXCatchStmt. 2773575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek Stmt *Label; 2781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2799cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// Terminator - The terminator for a basic block that 280fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// indicates the type of control-flow that occurs between a block 281fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// and its successors. 2823575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek Stmt *Terminator; 2831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2843575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// LoopTarget - Some blocks are used to represent the "loop edge" to 2853575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// the start of a loop from within the loop body. This Stmt* will be 2863575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// refer to the loop statement for such blocks (and be null otherwise). 2871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Stmt *LoopTarget; 2881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 289fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// BlockID - A numerical ID assigned to a CFGBlock during construction 290fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// of the CFG. 291fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned BlockID; 2921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 293fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// Predecessors/Successors - Keep track of the predecessor / successor 294fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// CFG blocks. 295ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek typedef BumpVector<CFGBlock*> AdjacentBlocks; 296fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek AdjacentBlocks Preds; 297fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek AdjacentBlocks Succs; 2981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 299fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekpublic: 300ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek explicit CFGBlock(unsigned blockid, BumpVectorContext &C) 301b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu : Elements(C), Label(NULL), Terminator(NULL), LoopTarget(NULL), 302ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek BlockID(blockid), Preds(C, 1), Succs(C, 1) {} 3037177dee8aee4b432911c91f1b788963bec0cac9fDaniel Dunbar ~CFGBlock() {} 304fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 305fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // Statement iterators 306b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::iterator iterator; 307b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::const_iterator const_iterator; 308b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::reverse_iterator reverse_iterator; 309b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::const_reverse_iterator const_reverse_iterator; 3101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 311b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement front() const { return Elements.front(); } 312b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement back() const { return Elements.back(); } 3131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 314b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu iterator begin() { return Elements.begin(); } 315b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu iterator end() { return Elements.end(); } 316b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_iterator begin() const { return Elements.begin(); } 317b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_iterator end() const { return Elements.end(); } 318fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 319b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu reverse_iterator rbegin() { return Elements.rbegin(); } 320b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu reverse_iterator rend() { return Elements.rend(); } 321b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_reverse_iterator rbegin() const { return Elements.rbegin(); } 322b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_reverse_iterator rend() const { return Elements.rend(); } 3231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 324b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu unsigned size() const { return Elements.size(); } 325b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu bool empty() const { return Elements.empty(); } 326be7a7d6f2e5b86807afd08a568863df973baaa38Ted Kremenek 327b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement operator[](size_t i) const { return Elements[i]; } 3281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 329fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // CFG iterators 330fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::iterator pred_iterator; 331fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_iterator const_pred_iterator; 332fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::reverse_iterator pred_reverse_iterator; 333fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_reverse_iterator const_pred_reverse_iterator; 334fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 335fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::iterator succ_iterator; 336fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_iterator const_succ_iterator; 337fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::reverse_iterator succ_reverse_iterator; 338fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_reverse_iterator const_succ_reverse_iterator; 3391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 340fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_iterator pred_begin() { return Preds.begin(); } 341fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_iterator pred_end() { return Preds.end(); } 342fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_iterator pred_begin() const { return Preds.begin(); } 343fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_iterator pred_end() const { return Preds.end(); } 3441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 345fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_reverse_iterator pred_rbegin() { return Preds.rbegin(); } 3461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump pred_reverse_iterator pred_rend() { return Preds.rend(); } 347fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_reverse_iterator pred_rbegin() const { return Preds.rbegin(); } 348fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_reverse_iterator pred_rend() const { return Preds.rend(); } 349fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 3501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump succ_iterator succ_begin() { return Succs.begin(); } 351fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_iterator succ_end() { return Succs.end(); } 352fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_iterator succ_begin() const { return Succs.begin(); } 3531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_succ_iterator succ_end() const { return Succs.end(); } 3541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 355fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_reverse_iterator succ_rbegin() { return Succs.rbegin(); } 356fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_reverse_iterator succ_rend() { return Succs.rend(); } 357fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_reverse_iterator succ_rbegin() const { return Succs.rbegin(); } 358fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_reverse_iterator succ_rend() const { return Succs.rend(); } 359fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 360fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned succ_size() const { return Succs.size(); } 361fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek bool succ_empty() const { return Succs.empty(); } 362fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 363fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned pred_size() const { return Preds.size(); } 364fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek bool pred_empty() const { return Preds.empty(); } 3651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 366ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 367ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek class FilterOptions { 368ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek public: 369ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek FilterOptions() { 370ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek IgnoreDefaultsWithCoveredEnums = 0; 371be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek } 372ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 373ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek unsigned IgnoreDefaultsWithCoveredEnums : 1; 374ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek }; 375ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 376ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek static bool FilterEdge(const FilterOptions &F, const CFGBlock *Src, 377be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek const CFGBlock *Dst); 378ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 379ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek template <typename IMPL, bool IsPred> 380ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek class FilteredCFGBlockIterator { 381ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek private: 382ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek IMPL I, E; 383ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const FilterOptions F; 384ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const CFGBlock *From; 385ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek public: 386ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek explicit FilteredCFGBlockIterator(const IMPL &i, const IMPL &e, 387be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek const CFGBlock *from, 388be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek const FilterOptions &f) 389ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek : I(i), E(e), F(f), From(from) {} 390ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 391ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek bool hasMore() const { return I != E; } 392ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 393ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek FilteredCFGBlockIterator &operator++() { 394ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek do { ++I; } while (hasMore() && Filter(*I)); 395ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return *this; 396ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 397ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 398ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const CFGBlock *operator*() const { return *I; } 399ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek private: 400ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek bool Filter(const CFGBlock *To) { 401ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return IsPred ? FilterEdge(F, To, From) : FilterEdge(F, From, To); 402ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 403ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek }; 404ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 405ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek typedef FilteredCFGBlockIterator<const_pred_iterator, true> 406ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_pred_iterator; 407ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 408ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek typedef FilteredCFGBlockIterator<const_succ_iterator, false> 409ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_succ_iterator; 410ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 411ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_pred_iterator filtered_pred_start_end(const FilterOptions &f) const { 412ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return filtered_pred_iterator(pred_begin(), pred_end(), this, f); 413ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 414ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 415ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_succ_iterator filtered_succ_start_end(const FilterOptions &f) const { 416ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return filtered_succ_iterator(succ_begin(), succ_end(), this, f); 417ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 418ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 419fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // Manipulation of block contents 4201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4219cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek void setTerminator(Stmt* Statement) { Terminator = Statement; } 4229cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek void setLabel(Stmt* Statement) { Label = Statement; } 4233575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek void setLoopTarget(const Stmt *loopTarget) { LoopTarget = loopTarget; } 4249cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek 4259cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek Stmt* getTerminator() { return Terminator; } 4269cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek const Stmt* getTerminator() const { return Terminator; } 4271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 428390e48b15ad93f85bfd1e33b9992c198fa0db475Ted Kremenek Stmt* getTerminatorCondition(); 4291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 430390e48b15ad93f85bfd1e33b9992c198fa0db475Ted Kremenek const Stmt* getTerminatorCondition() const { 431411cdee0b490f79428c9eb977f25199eb7d21cd8Ted Kremenek return const_cast<CFGBlock*>(this)->getTerminatorCondition(); 432411cdee0b490f79428c9eb977f25199eb7d21cd8Ted Kremenek } 4331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4343575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek const Stmt *getLoopTarget() const { return LoopTarget; } 4351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4369c2535a35db35b3a821a0d0c36a01a16f52f1ad0Ted Kremenek bool hasBinaryBranchTerminator() const; 4371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4389cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek Stmt* getLabel() { return Label; } 4399cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek const Stmt* getLabel() const { return Label; } 4401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 441fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned getBlockID() const { return BlockID; } 4421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 443e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void dump(const CFG *cfg, const LangOptions &LO) const; 444e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void print(llvm::raw_ostream &OS, const CFG* cfg, const LangOptions &LO) const; 445e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void printTerminator(llvm::raw_ostream &OS, const LangOptions &LO) const; 446ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek 447ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek void addSuccessor(CFGBlock* Block, BumpVectorContext &C) { 448ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek if (Block) 449ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek Block->Preds.push_back(this, C); 450ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek Succs.push_back(Block, C); 451ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek } 452ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek 453852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek void appendStmt(Stmt* Statement, BumpVectorContext &C, bool asLValue) { 454b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Elements.push_back(CFGStmt(Statement, asLValue), C); 455079bd72439448b78629a28da6b1f8abe2cdeaf4dMike Stump } 45682bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski 45782bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski void appendInitializer(CXXBaseOrMemberInitializer *I, BumpVectorContext& C) { 45882bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski Elements.push_back(CFGInitializer(I), C); 45982bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski } 46082bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski 4617c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski void appendBaseDtor(const CXXBaseSpecifier *BS, BumpVectorContext &C) { 4627c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski Elements.push_back(CFGBaseDtor(BS), C); 4637c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 4647c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 4657c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski void appendMemberDtor(FieldDecl *FD, BumpVectorContext &C) { 4667c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski Elements.push_back(CFGMemberDtor(FD), C); 4677c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 4687c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 46953de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // Destructors must be inserted in reversed order. So insertion is in two 47053de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // steps. First we prepare space for some number of elements, then we insert 47153de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // the elements beginning at the last position in prepared space. 47253de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski iterator beginAutomaticObjDtorsInsert(iterator I, size_t Cnt, 47353de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski BumpVectorContext& C) { 47453de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski return iterator(Elements.insert(I.base(), Cnt, CFGElement(), C)); 47553de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 47653de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski iterator insertAutomaticObjDtor(iterator I, VarDecl* VD, Stmt* S) { 47753de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski *I = CFGAutomaticObjDtor(VD, S); 47853de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski return ++I; 47953de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 480fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek}; 4811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 482fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFG - Represents a source-level, intra-procedural CFG that represents the 483fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// control-flow of a Stmt. The Stmt can represent an entire function body, 484fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// or a single expression. A CFG will always contain one empty block that 485fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// represents the Exit point of the CFG. A CFG will also contain a designated 486fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Entry block. The CFG solely represents control-flow; it consists of 487fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFGBlocks which are simply containers of Stmt*'s in the AST the CFG 488fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// was constructed from. 489fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekclass CFG { 490fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekpublic: 491a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 492a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Construction & Manipulation. 493a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 494a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 4956c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek class BuildOptions { 4966c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek public: 4976c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek bool PruneTriviallyFalseEdges:1; 4986c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek bool AddEHEdges:1; 4996c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek bool AddInitializers:1; 5006c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek bool AddImplicitDtors:1; 5016c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek 5026c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek BuildOptions() 5036c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek : PruneTriviallyFalseEdges(true) 5046c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek , AddEHEdges(false) 5056c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek , AddInitializers(false) 5066c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek , AddImplicitDtors(false) {} 5076c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek }; 5086c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek 509a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// buildCFG - Builds a CFG from an AST. The responsibility to free the 5101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// constructed CFG belongs to the caller. 511b978a441c7d8bf59e7fede938e1f3b672573b443Mike Stump static CFG* buildCFG(const Decl *D, Stmt* AST, ASTContext *C, 5126c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek BuildOptions BO = BuildOptions()); 5131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 514a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// createBlock - Create a new block in the CFG. The CFG owns the block; 515a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// the caller should not directly free it. 516a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* createBlock(); 5171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 518a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// setEntry - Set the entry block of the CFG. This is typically used 519a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// only during CFG construction. Most CFG clients expect that the 520a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// entry block has no predecessors and contains no statements. 521a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek void setEntry(CFGBlock *B) { Entry = B; } 5221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 523e38158de9236dfcded7da56126134e5e3e49cb01Ted Kremenek /// setIndirectGotoBlock - Set the block used for indirect goto jumps. 524e38158de9236dfcded7da56126134e5e3e49cb01Ted Kremenek /// This is typically used only during CFG construction. 525a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek void setIndirectGotoBlock(CFGBlock* B) { IndirectGotoBlock = B; } 5261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 527a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 528a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // Block Iterators 529a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 530a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 531ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek typedef BumpVector<CFGBlock*> CFGBlockListTy; 532a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef CFGBlockListTy::iterator iterator; 533a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef CFGBlockListTy::const_iterator const_iterator; 534a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef std::reverse_iterator<iterator> reverse_iterator; 535a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 536fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 537ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek CFGBlock& front() { return *Blocks.front(); } 538ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek CFGBlock& back() { return *Blocks.back(); } 5391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 54019bb356317952445b03ee341c02f6147083c9eeaTed Kremenek iterator begin() { return Blocks.begin(); } 54119bb356317952445b03ee341c02f6147083c9eeaTed Kremenek iterator end() { return Blocks.end(); } 54219bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_iterator begin() const { return Blocks.begin(); } 5431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_iterator end() const { return Blocks.end(); } 5441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 54519bb356317952445b03ee341c02f6147083c9eeaTed Kremenek reverse_iterator rbegin() { return Blocks.rbegin(); } 54619bb356317952445b03ee341c02f6147083c9eeaTed Kremenek reverse_iterator rend() { return Blocks.rend(); } 54719bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_reverse_iterator rbegin() const { return Blocks.rbegin(); } 54819bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_reverse_iterator rend() const { return Blocks.rend(); } 5491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 55019bb356317952445b03ee341c02f6147083c9eeaTed Kremenek CFGBlock& getEntry() { return *Entry; } 5517dba8607e59096014b7139ff20ef00870041d518Ted Kremenek const CFGBlock& getEntry() const { return *Entry; } 55219bb356317952445b03ee341c02f6147083c9eeaTed Kremenek CFGBlock& getExit() { return *Exit; } 5537dba8607e59096014b7139ff20ef00870041d518Ted Kremenek const CFGBlock& getExit() const { return *Exit; } 5547dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 5557dba8607e59096014b7139ff20ef00870041d518Ted Kremenek CFGBlock* getIndirectGotoBlock() { return IndirectGotoBlock; } 5567dba8607e59096014b7139ff20ef00870041d518Ted Kremenek const CFGBlock* getIndirectGotoBlock() const { return IndirectGotoBlock; } 5571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 558a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 559a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek // Member templates useful for various batch operations over CFGs. 560a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek //===--------------------------------------------------------------------===// 5611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 562a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek template <typename CALLBACK> 563a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek void VisitBlockStmts(CALLBACK& O) const { 564a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek for (const_iterator I=begin(), E=end(); I != E; ++I) 565ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek for (CFGBlock::const_iterator BI=(*I)->begin(), BE=(*I)->end(); 566b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu BI != BE; ++BI) { 567b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu if (CFGStmt S = BI->getAs<CFGStmt>()) 568b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu O(S); 569b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 5701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 5711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 572a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek //===--------------------------------------------------------------------===// 573a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Introspection. 574a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 575a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 57663f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek struct BlkExprNumTy { 57763f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek const signed Idx; 57863f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek explicit BlkExprNumTy(signed idx) : Idx(idx) {} 57963f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek explicit BlkExprNumTy() : Idx(-1) {} 58063f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek operator bool() const { return Idx >= 0; } 58163f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek operator unsigned() const { assert(Idx >=0); return (unsigned) Idx; } 58263f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek }; 5831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 58486946745225096243f6969dc745267b78fc211a6Ted Kremenek bool isBlkExpr(const Stmt* S) { return getBlkExprNum(S); } 58586946745225096243f6969dc745267b78fc211a6Ted Kremenek BlkExprNumTy getBlkExprNum(const Stmt* S); 58663f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek unsigned getNumBlkExprs(); 5871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5880c8c5365be0176e8399e97d7da3293c79bc9da24Mike Stump /// getNumBlockIDs - Returns the total number of BlockIDs allocated (which 5890c8c5365be0176e8399e97d7da3293c79bc9da24Mike Stump /// start at 0). 5909438252ad2ecae5338df565ca33c6969e4fbfa41Ted Kremenek unsigned getNumBlockIDs() const { return NumBlockIDs; } 591a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 592a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 593a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Debugging: Pretty-Printing and Visualization. 594a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 595a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 596e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void viewCFG(const LangOptions &LO) const; 597e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void print(llvm::raw_ostream& OS, const LangOptions &LO) const; 598e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void dump(const LangOptions &LO) const; 599a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 600a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 601a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // Internal: constructors and data. 602a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 603a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 6041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CFG() : Entry(NULL), Exit(NULL), IndirectGotoBlock(NULL), NumBlockIDs(0), 6057177dee8aee4b432911c91f1b788963bec0cac9fDaniel Dunbar BlkExprMap(NULL), Blocks(BlkBVC, 10) {} 6061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 60763f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek ~CFG(); 6081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 609ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek llvm::BumpPtrAllocator& getAllocator() { 610ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek return BlkBVC.getAllocator(); 611ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek } 612ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek 613ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek BumpVectorContext &getBumpVectorContext() { 614ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek return BlkBVC; 615ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek } 6161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 617a36c6540346266f570b2fc7457950dea45d89988Ted Kremenekprivate: 618a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* Entry; 619a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* Exit; 620a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* IndirectGotoBlock; // Special block to contain collective dispatch 621ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek // for indirect gotos 62263f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek unsigned NumBlockIDs; 6231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 62486d1777a6b7723865c1e67a7aafc797ec0a574ffTed Kremenek // BlkExprMap - An opaque pointer to prevent inclusion of DenseMap.h. 6251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // It represents a map from Expr* to integers to record the set of 62686d1777a6b7723865c1e67a7aafc797ec0a574ffTed Kremenek // block-level expressions and their "statement number" in the CFG. 62763f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek void* BlkExprMap; 628ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek 629ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek BumpVectorContext BlkBVC; 630ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek 631ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek CFGBlockListTy Blocks; 6321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 633fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek}; 634fa2be43dbd6fdc4414e261db69aaf35dfb21a416Ted Kremenek} // end namespace clang 6357dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 6367dba8607e59096014b7139ff20ef00870041d518Ted Kremenek//===----------------------------------------------------------------------===// 6377dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// GraphTraits specializations for CFG basic block graphs (source-level CFGs) 6387dba8607e59096014b7139ff20ef00870041d518Ted Kremenek//===----------------------------------------------------------------------===// 6397dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 6407dba8607e59096014b7139ff20ef00870041d518Ted Kremeneknamespace llvm { 6417dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 6427dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// Traits for: CFGBlock 6437dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 644852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits< ::clang::CFGBlock* > { 645852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock NodeType; 646852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::succ_iterator ChildIteratorType; 6471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 648852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType* getEntryNode(::clang::CFGBlock* BB) 6497dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return BB; } 6507dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 6517dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 6527dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_begin(); } 6531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6547dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 6557dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_end(); } 6567dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 6577dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 658852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits< const ::clang::CFGBlock* > { 659852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef const ::clang::CFGBlock NodeType; 660852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::const_succ_iterator ChildIteratorType; 6611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6627dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static NodeType* getEntryNode(const clang::CFGBlock* BB) 6637dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return BB; } 6641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6657dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 6667dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_begin(); } 6671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6687dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 6697dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_end(); } 6707dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 6717dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 672852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<Inverse<const ::clang::CFGBlock*> > { 673852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef const ::clang::CFGBlock NodeType; 674852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::const_pred_iterator ChildIteratorType; 6757dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 676852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode(Inverse<const ::clang::CFGBlock*> G) 6777dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return G.Graph; } 6787dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 6797dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 6807dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->pred_begin(); } 6811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6827dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 6837dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->pred_end(); } 6847dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 6857dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 6867dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// Traits for: CFG 6877dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 688852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits< ::clang::CFG* > 689852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek : public GraphTraits< ::clang::CFGBlock* > { 6907dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 691852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFG::iterator nodes_iterator; 6921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 693852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode(::clang::CFG* F) { return &F->getEntry(); } 694852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_begin(::clang::CFG* F) { return F->begin(); } 695852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_end(::clang::CFG* F) { return F->end(); } 6967dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 6977dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 698852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<const ::clang::CFG* > 699852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek : public GraphTraits<const ::clang::CFGBlock* > { 7007dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 701852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFG::const_iterator nodes_iterator; 7027dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 703852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode( const ::clang::CFG* F) { 704852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return &F->getEntry(); 705852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 706852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_begin( const ::clang::CFG* F) { 707852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return F->begin(); 708852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 709852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_end( const ::clang::CFG* F) { 710852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return F->end(); 711852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 7127dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 7137dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 714852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<Inverse<const ::clang::CFG*> > 715852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek : public GraphTraits<Inverse<const ::clang::CFGBlock*> > { 7167dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 717852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFG::const_iterator nodes_iterator; 7187dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 719852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode(const ::clang::CFG* F) { return &F->getExit(); } 720852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_begin(const ::clang::CFG* F) { return F->begin();} 721852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_end(const ::clang::CFG* F) { return F->end(); } 7227dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 7237dba8607e59096014b7139ff20ef00870041d518Ted Kremenek} // end llvm namespace 724cd881d534517f09a2fae10445f9b865f49ccc6c8Ted Kremenek#endif 725