CFG.h revision ba243b59a1074e0962f6abfa3bb9aa984eac1245
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" 22b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek#include "llvm/ADT/OwningPtr.h" 23b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek#include "llvm/ADT/DenseMap.h" 2474fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek#include "llvm/ADT/BitVector.h" 2574fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek#include "clang/AST/Stmt.h" 26ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek#include "clang/Analysis/Support/BumpVector.h" 27079bd72439448b78629a28da6b1f8abe2cdeaf4dMike Stump#include "clang/Basic/SourceLocation.h" 28c1581a0d64b0ee4f822ed2fca4442a111d03569aHartmut Kaiser#include <cassert> 29403ba3522d1b1c97ae5fad81c1a2c4b3a754e1c1Nick Lewycky#include <iterator> 30fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 31fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremeneknamespace clang { 323c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek class CXXDestructorDecl; 33b978a441c7d8bf59e7fede938e1f3b672573b443Mike Stump class Decl; 3442a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class Stmt; 3563f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek class Expr; 367c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski class FieldDecl; 371cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski class VarDecl; 38cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt class CXXCtorInitializer; 397c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski class CXXBaseSpecifier; 408599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski class CXXBindTemporaryExpr; 4142a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class CFG; 4242a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class PrinterHelper; 43e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner class LangOptions; 44e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump class ASTContext; 45e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump 46852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek/// CFGElement - Represents a top-level expression in a basic block. 47852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenekclass CFGElement { 48852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenekpublic: 49b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu enum Kind { 50b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // main kind 513c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek Invalid, 52b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Statement, 53b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Initializer, 54b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // dtor kind 55b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu AutomaticObjectDtor, 56b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu BaseDtor, 57b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu MemberDtor, 58b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu TemporaryDtor, 593c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek DTOR_BEGIN = AutomaticObjectDtor, 603c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek DTOR_END = TemporaryDtor 61b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu }; 62b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 63b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuprotected: 643c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek // The int bits are used to mark the kind. 65b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu llvm::PointerIntPair<void *, 2> Data1; 66b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu llvm::PointerIntPair<void *, 2> Data2; 67b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 683c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGElement(Kind kind, const void *Ptr1, const void *Ptr2 = 0) 693c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : Data1(const_cast<void*>(Ptr1), ((unsigned) kind) & 0x3), 70ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie Data2(const_cast<void*>(Ptr2), (((unsigned) kind) >> 2) & 0x3) {} 711cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 72b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 73b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement() {} 74b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 75ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie Kind getKind() const { 763c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek unsigned x = Data2.getInt(); 773c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek x <<= 2; 783c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek x |= Data1.getInt(); 793c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return (Kind) x; 80b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 81ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 823c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek bool isValid() const { return getKind() != Invalid; } 83b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 84b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu operator bool() const { return isValid(); } 85ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 863c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek template<class ElemTy> const ElemTy *getAs() const { 87b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu if (llvm::isa<ElemTy>(this)) 883c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return static_cast<const ElemTy*>(this); 893c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return 0; 90b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 91b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 92b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { return true; } 93b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 94b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 95b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGStmt : public CFGElement { 96b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 973c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGStmt(Stmt *S) : CFGElement(Statement, S) {} 98b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 99ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie const Stmt *getStmt() const { 100f1d10d939739f1a4544926d807e4f0f9fb64be61Ted Kremenek return static_cast<const Stmt *>(Data1.getPointer()); 101f1d10d939739f1a4544926d807e4f0f9fb64be61Ted Kremenek } 102b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 103b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 104892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek return E->getKind() == Statement; 105b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 106b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 107b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1081cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// CFGInitializer - Represents C++ base or member initializer from 1091cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// constructor's initialization list. 110b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGInitializer : public CFGElement { 111b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1123c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGInitializer(CXXCtorInitializer *initializer) 1133c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGElement(Initializer, initializer) {} 1141cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 115cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt CXXCtorInitializer* getInitializer() const { 116cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt return static_cast<CXXCtorInitializer*>(Data1.getPointer()); 1171cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 1181cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 119b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 120b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Initializer; 121b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 122b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 123b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 12453de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski/// CFGImplicitDtor - Represents C++ object destructor implicitly generated 1251cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// by compiler on various occasions. 126b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGImplicitDtor : public CFGElement { 1271cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderskiprotected: 128ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie CFGImplicitDtor(Kind kind, const void *data1, const void *data2 = 0) 1293c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGElement(kind, data1, data2) { 130ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie assert(kind >= DTOR_BEGIN && kind <= DTOR_END); 1313c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek } 1321cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 133b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 134c5aff4497e5bfd7523e00b87560c1a5aa65136ccTed Kremenek const CXXDestructorDecl *getDestructorDecl(ASTContext &astContext) const; 135c5aff4497e5bfd7523e00b87560c1a5aa65136ccTed Kremenek bool isNoReturn(ASTContext &astContext) const; 1361cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 137b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 1383c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek Kind kind = E->getKind(); 1393c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return kind >= DTOR_BEGIN && kind <= DTOR_END; 140b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 141b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 142b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1437c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// CFGAutomaticObjDtor - Represents C++ object destructor implicitly generated 1441cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// for automatic object or temporary bound to const reference at the point 1451cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// of leaving its local scope. 146b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGAutomaticObjDtor: public CFGImplicitDtor { 147b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1483c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGAutomaticObjDtor(const VarDecl *var, const Stmt *stmt) 1493c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGImplicitDtor(AutomaticObjectDtor, var, stmt) {} 1501cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 1513c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const VarDecl *getVarDecl() const { 1521cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski return static_cast<VarDecl*>(Data1.getPointer()); 1531cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 1541cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 1551cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski // Get statement end of which triggered the destructor call. 1563c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const Stmt *getTriggerStmt() const { 1571cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski return static_cast<Stmt*>(Data2.getPointer()); 1581cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 1591cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 1603c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek static bool classof(const CFGElement *elem) { 1613c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return elem->getKind() == AutomaticObjectDtor; 162b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 163b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 164b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1657c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// CFGBaseDtor - Represents C++ object destructor implicitly generated for 1667c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// base object in destructor. 167b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGBaseDtor : public CFGImplicitDtor { 168b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1693c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGBaseDtor(const CXXBaseSpecifier *base) 1703c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGImplicitDtor(BaseDtor, base) {} 1717c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 1727c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski const CXXBaseSpecifier *getBaseSpecifier() const { 1737c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski return static_cast<const CXXBaseSpecifier*>(Data1.getPointer()); 1747c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 1757c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 176b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 1773c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return E->getKind() == BaseDtor; 178b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 179b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 180b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1817c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// CFGMemberDtor - Represents C++ object destructor implicitly generated for 1827c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski/// member object in destructor. 183b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGMemberDtor : public CFGImplicitDtor { 184b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1853c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGMemberDtor(const FieldDecl *field) 1863c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGImplicitDtor(MemberDtor, field, 0) {} 1877c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 1883c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const FieldDecl *getFieldDecl() const { 1893c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return static_cast<const FieldDecl*>(Data1.getPointer()); 1907c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 1917c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 192b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 1933c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return E->getKind() == MemberDtor; 194b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 195b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 196b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1978599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski/// CFGTemporaryDtor - Represents C++ object destructor implicitly generated 1988599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski/// at the end of full expression for temporary object. 199b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGTemporaryDtor : public CFGImplicitDtor { 200b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 2013c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek CFGTemporaryDtor(CXXBindTemporaryExpr *expr) 2023c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek : CFGImplicitDtor(TemporaryDtor, expr, 0) {} 2038599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski 2043c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const CXXBindTemporaryExpr *getBindTemporaryExpr() const { 2053c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return static_cast<const CXXBindTemporaryExpr *>(Data1.getPointer()); 2068599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski } 2078599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski 208b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 2093c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return E->getKind() == TemporaryDtor; 210b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 211852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek}; 212852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 2134ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// CFGTerminator - Represents CFGBlock terminator statement. 2144ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// 2154ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// TemporaryDtorsBranch bit is set to true if the terminator marks a branch 2164ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// in control flow of destructors of temporaries. In this case terminator 2174ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// statement is the same statement that branches control flow in evaluation 2184ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// of matching full expression. 2194ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderskiclass CFGTerminator { 2204ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski llvm::PointerIntPair<Stmt *, 1> Data; 2214ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderskipublic: 2224ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski CFGTerminator() {} 2234ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski CFGTerminator(Stmt *S, bool TemporaryDtorsBranch = false) 2244ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski : Data(S, TemporaryDtorsBranch) {} 2254ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 2264ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski Stmt *getStmt() { return Data.getPointer(); } 2274ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski const Stmt *getStmt() const { return Data.getPointer(); } 2284ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 2294ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski bool isTemporaryDtorsBranch() const { return Data.getInt(); } 2304ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 2314ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski operator Stmt *() { return getStmt(); } 2324ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski operator const Stmt *() const { return getStmt(); } 2334ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 2344ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski Stmt *operator->() { return getStmt(); } 2354ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski const Stmt *operator->() const { return getStmt(); } 2364ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 2374ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski Stmt &operator*() { return *getStmt(); } 2384ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski const Stmt &operator*() const { return *getStmt(); } 2394ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 2404ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski operator bool() const { return getStmt(); } 2414ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski}; 2424ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 243fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFGBlock - Represents a single basic block in a source-level CFG. 244fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// It consists of: 245fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 246fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (1) A set of statements/expressions (which may contain subexpressions). 247fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (2) A "terminator" statement (not in the set of statements). 248fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (3) A list of successors and predecessors. 249fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 250fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Terminator: The terminator represents the type of control-flow that occurs 251fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// at the end of the basic block. The terminator is a Stmt* referring to an 252fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// AST node that has control-flow: if-statements, breaks, loops, etc. 253fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// If the control-flow is conditional, the condition expression will appear 254fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// within the set of statements in the block (usually the last statement). 255fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 256fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Predecessors: the order in the set of predecessors is arbitrary. 257fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 258fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Successors: the order in the set of successors is NOT arbitrary. We 259fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// currently have the following orderings based on the terminator: 260fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 261fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Terminator Successor Ordering 262fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// ----------------------------------------------------- 263fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// if Then Block; Else Block 2649cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek/// ? operator LHS expression; RHS expression 2659cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek/// &&, || expression that uses result of && or ||, RHS 266fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 2673cda937d4c015ff6070f1117024621a452cfadddTed Kremenek/// But note that any of that may be NULL in case of optimized-out edges. 2683cda937d4c015ff6070f1117024621a452cfadddTed Kremenek/// 269fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekclass CFGBlock { 270b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu class ElementList { 271852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef BumpVector<CFGElement> ImplTy; 2726c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek ImplTy Impl; 2736c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek public: 274b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu ElementList(BumpVectorContext &C) : Impl(C, 4) {} 275ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 2766c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef std::reverse_iterator<ImplTy::iterator> iterator; 2776c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef std::reverse_iterator<ImplTy::const_iterator> const_iterator; 2786c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef ImplTy::iterator reverse_iterator; 279ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie typedef ImplTy::const_iterator const_reverse_iterator; 280ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 281852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek void push_back(CFGElement e, BumpVectorContext &C) { Impl.push_back(e, C); } 28253de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski reverse_iterator insert(reverse_iterator I, size_t Cnt, CFGElement E, 2839c378f705405d37f49795d5e915989de774fe11fTed Kremenek BumpVectorContext &C) { 28453de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski return Impl.insert(I, Cnt, E, C); 28553de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 28653de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski 287852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek CFGElement front() const { return Impl.back(); } 288852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek CFGElement back() const { return Impl.front(); } 289ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 2906c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek iterator begin() { return Impl.rbegin(); } 2916c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek iterator end() { return Impl.rend(); } 2926c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_iterator begin() const { return Impl.rbegin(); } 2936c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_iterator end() const { return Impl.rend(); } 2946c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek reverse_iterator rbegin() { return Impl.begin(); } 2956c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek reverse_iterator rend() { return Impl.end(); } 2966c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_reverse_iterator rbegin() const { return Impl.begin(); } 2976c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_reverse_iterator rend() const { return Impl.end(); } 2986c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 299852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek CFGElement operator[](size_t i) const { 3006c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek assert(i < Impl.size()); 3016c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek return Impl[Impl.size() - 1 - i]; 3026c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek } 303ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 3046c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek size_t size() const { return Impl.size(); } 3056c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek bool empty() const { return Impl.empty(); } 3066c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek }; 3076c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 308fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// Stmts - The set of statements in the basic block. 309b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu ElementList Elements; 3109cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek 3119cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// Label - An (optional) label that prefixes the executable 3129cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// statements in the block. When this variable is non-NULL, it is 3134c45aa1b00b91847acfb082acfaced3ffa294d1dMike Stump /// either an instance of LabelStmt, SwitchCase or CXXCatchStmt. 3143575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek Stmt *Label; 3151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3169cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// Terminator - The terminator for a basic block that 317fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// indicates the type of control-flow that occurs between a block 318fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// and its successors. 3194ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski CFGTerminator Terminator; 3201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3213575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// LoopTarget - Some blocks are used to represent the "loop edge" to 3223575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// the start of a loop from within the loop body. This Stmt* will be 3233575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// refer to the loop statement for such blocks (and be null otherwise). 3241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Stmt *LoopTarget; 3251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 326fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// BlockID - A numerical ID assigned to a CFGBlock during construction 327fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// of the CFG. 328fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned BlockID; 3291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 330fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// Predecessors/Successors - Keep track of the predecessor / successor 331fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// CFG blocks. 332ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek typedef BumpVector<CFGBlock*> AdjacentBlocks; 333fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek AdjacentBlocks Preds; 334fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek AdjacentBlocks Succs; 3351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 33683754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// NoReturn - This bit is set when the basic block contains a function call 33783754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// or implicit destructor that is attributed as 'noreturn'. In that case, 33883754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// control cannot technically ever proceed past this block. All such blocks 33983754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// will have a single immediate successor: the exit block. This allows them 34083754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// to be easily reached from the exit block and using this bit quickly 34183754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// recognized without scanning the contents of the block. 34283754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// 34383754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// Optimization Note: This bit could be profitably folded with Terminator's 34483754162f698a5dafad93fb89be0953651a604d0Chandler Carruth /// storage if the memory usage of CFGBlock becomes an issue. 34583754162f698a5dafad93fb89be0953651a604d0Chandler Carruth unsigned HasNoReturnElement : 1; 34683754162f698a5dafad93fb89be0953651a604d0Chandler Carruth 347fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekpublic: 348ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek explicit CFGBlock(unsigned blockid, BumpVectorContext &C) 349b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu : Elements(C), Label(NULL), Terminator(NULL), LoopTarget(NULL), 35083754162f698a5dafad93fb89be0953651a604d0Chandler Carruth BlockID(blockid), Preds(C, 1), Succs(C, 1), HasNoReturnElement(false) {} 3517177dee8aee4b432911c91f1b788963bec0cac9fDaniel Dunbar ~CFGBlock() {} 352fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 353fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // Statement iterators 354b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::iterator iterator; 355b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::const_iterator const_iterator; 356b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::reverse_iterator reverse_iterator; 357b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::const_reverse_iterator const_reverse_iterator; 3581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 359b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement front() const { return Elements.front(); } 360b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement back() const { return Elements.back(); } 3611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 362b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu iterator begin() { return Elements.begin(); } 363b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu iterator end() { return Elements.end(); } 364b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_iterator begin() const { return Elements.begin(); } 365b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_iterator end() const { return Elements.end(); } 366fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 367b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu reverse_iterator rbegin() { return Elements.rbegin(); } 368b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu reverse_iterator rend() { return Elements.rend(); } 369b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_reverse_iterator rbegin() const { return Elements.rbegin(); } 370b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_reverse_iterator rend() const { return Elements.rend(); } 3711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 372b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu unsigned size() const { return Elements.size(); } 373b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu bool empty() const { return Elements.empty(); } 374be7a7d6f2e5b86807afd08a568863df973baaa38Ted Kremenek 375b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement operator[](size_t i) const { return Elements[i]; } 3761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 377fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // CFG iterators 378fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::iterator pred_iterator; 379fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_iterator const_pred_iterator; 380fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::reverse_iterator pred_reverse_iterator; 381fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_reverse_iterator const_pred_reverse_iterator; 382fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 383fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::iterator succ_iterator; 384fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_iterator const_succ_iterator; 385fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::reverse_iterator succ_reverse_iterator; 386fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_reverse_iterator const_succ_reverse_iterator; 3871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 388fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_iterator pred_begin() { return Preds.begin(); } 389fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_iterator pred_end() { return Preds.end(); } 390fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_iterator pred_begin() const { return Preds.begin(); } 391fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_iterator pred_end() const { return Preds.end(); } 3921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 393fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_reverse_iterator pred_rbegin() { return Preds.rbegin(); } 3941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump pred_reverse_iterator pred_rend() { return Preds.rend(); } 395fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_reverse_iterator pred_rbegin() const { return Preds.rbegin(); } 396fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_reverse_iterator pred_rend() const { return Preds.rend(); } 397fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 3981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump succ_iterator succ_begin() { return Succs.begin(); } 399fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_iterator succ_end() { return Succs.end(); } 400fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_iterator succ_begin() const { return Succs.begin(); } 4011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_succ_iterator succ_end() const { return Succs.end(); } 4021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 403fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_reverse_iterator succ_rbegin() { return Succs.rbegin(); } 404fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_reverse_iterator succ_rend() { return Succs.rend(); } 405fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_reverse_iterator succ_rbegin() const { return Succs.rbegin(); } 406fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_reverse_iterator succ_rend() const { return Succs.rend(); } 407fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 408fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned succ_size() const { return Succs.size(); } 409fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek bool succ_empty() const { return Succs.empty(); } 410fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 411fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned pred_size() const { return Preds.size(); } 412fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek bool pred_empty() const { return Preds.empty(); } 4131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 414ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 415ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek class FilterOptions { 416ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek public: 417ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek FilterOptions() { 418ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek IgnoreDefaultsWithCoveredEnums = 0; 419be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek } 420ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 421ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek unsigned IgnoreDefaultsWithCoveredEnums : 1; 422ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek }; 423ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 424ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek static bool FilterEdge(const FilterOptions &F, const CFGBlock *Src, 425be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek const CFGBlock *Dst); 426ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 427ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek template <typename IMPL, bool IsPred> 428ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek class FilteredCFGBlockIterator { 429ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek private: 430ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek IMPL I, E; 431ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const FilterOptions F; 432ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const CFGBlock *From; 433ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek public: 434ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek explicit FilteredCFGBlockIterator(const IMPL &i, const IMPL &e, 435be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek const CFGBlock *from, 436be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek const FilterOptions &f) 437ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek : I(i), E(e), F(f), From(from) {} 438ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 439ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek bool hasMore() const { return I != E; } 440ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 441ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek FilteredCFGBlockIterator &operator++() { 442ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek do { ++I; } while (hasMore() && Filter(*I)); 443ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return *this; 444ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 445ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 446ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const CFGBlock *operator*() const { return *I; } 447ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek private: 448ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek bool Filter(const CFGBlock *To) { 449ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return IsPred ? FilterEdge(F, To, From) : FilterEdge(F, From, To); 450ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 451ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek }; 452ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 453ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek typedef FilteredCFGBlockIterator<const_pred_iterator, true> 454ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_pred_iterator; 455ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 456ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek typedef FilteredCFGBlockIterator<const_succ_iterator, false> 457ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_succ_iterator; 458ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 459ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_pred_iterator filtered_pred_start_end(const FilterOptions &f) const { 460ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return filtered_pred_iterator(pred_begin(), pred_end(), this, f); 461ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 462ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 463ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_succ_iterator filtered_succ_start_end(const FilterOptions &f) const { 464ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return filtered_succ_iterator(succ_begin(), succ_end(), this, f); 465ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 466ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 467fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // Manipulation of block contents 4681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4699c378f705405d37f49795d5e915989de774fe11fTed Kremenek void setTerminator(Stmt *Statement) { Terminator = Statement; } 4709c378f705405d37f49795d5e915989de774fe11fTed Kremenek void setLabel(Stmt *Statement) { Label = Statement; } 4713575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek void setLoopTarget(const Stmt *loopTarget) { LoopTarget = loopTarget; } 47283754162f698a5dafad93fb89be0953651a604d0Chandler Carruth void setHasNoReturnElement() { HasNoReturnElement = true; } 4739cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek 4744ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski CFGTerminator getTerminator() { return Terminator; } 4754ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski const CFGTerminator getTerminator() const { return Terminator; } 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4779c378f705405d37f49795d5e915989de774fe11fTed Kremenek Stmt *getTerminatorCondition(); 4781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4799c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *getTerminatorCondition() const { 480411cdee0b490f79428c9eb977f25199eb7d21cd8Ted Kremenek return const_cast<CFGBlock*>(this)->getTerminatorCondition(); 481411cdee0b490f79428c9eb977f25199eb7d21cd8Ted Kremenek } 4821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4833575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek const Stmt *getLoopTarget() const { return LoopTarget; } 4841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4859c378f705405d37f49795d5e915989de774fe11fTed Kremenek Stmt *getLabel() { return Label; } 4869c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *getLabel() const { return Label; } 4871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 48883754162f698a5dafad93fb89be0953651a604d0Chandler Carruth bool hasNoReturnElement() const { return HasNoReturnElement; } 48983754162f698a5dafad93fb89be0953651a604d0Chandler Carruth 490fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned getBlockID() const { return BlockID; } 4911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 492e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void dump(const CFG *cfg, const LangOptions &LO) const; 4938cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner void print(raw_ostream &OS, const CFG* cfg, const LangOptions &LO) const; 4948cc488fefb2fb04bc8d5398da29f0182f97934cfChris Lattner void printTerminator(raw_ostream &OS, const LangOptions &LO) const; 495ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 4969c378f705405d37f49795d5e915989de774fe11fTed Kremenek void addSuccessor(CFGBlock *Block, BumpVectorContext &C) { 497ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek if (Block) 498ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek Block->Preds.push_back(this, C); 499ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek Succs.push_back(Block, C); 500ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek } 501ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 5029c378f705405d37f49795d5e915989de774fe11fTed Kremenek void appendStmt(Stmt *statement, BumpVectorContext &C) { 503892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek Elements.push_back(CFGStmt(statement), C); 504079bd72439448b78629a28da6b1f8abe2cdeaf4dMike Stump } 50582bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski 506cbb67480094b3bcb5b715acd827cbad55e2a204cSean Hunt void appendInitializer(CXXCtorInitializer *initializer, 5079c378f705405d37f49795d5e915989de774fe11fTed Kremenek BumpVectorContext &C) { 508892697dd2287caf7c29aaaa82909b0e90b8b63feTed Kremenek Elements.push_back(CFGInitializer(initializer), C); 50982bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski } 51082bc3fd823d85ee3ef9a641c0975b6ad25f55047Marcin Swiderski 5117c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski void appendBaseDtor(const CXXBaseSpecifier *BS, BumpVectorContext &C) { 5127c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski Elements.push_back(CFGBaseDtor(BS), C); 5137c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 5147c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 5157c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski void appendMemberDtor(FieldDecl *FD, BumpVectorContext &C) { 5167c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski Elements.push_back(CFGMemberDtor(FD), C); 5177c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski } 518ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 5198599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski void appendTemporaryDtor(CXXBindTemporaryExpr *E, BumpVectorContext &C) { 5208599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski Elements.push_back(CFGTemporaryDtor(E), C); 5218599e7677e067fd01d3b2ee4c0875747d367fd8eMarcin Swiderski } 5227c625d8ffc20b92fff9e1690cd2484fcb6498183Marcin Swiderski 523c8cfc74bdcc999828bc232294d937fb191940d5bChandler Carruth void appendAutomaticObjDtor(VarDecl *VD, Stmt *S, BumpVectorContext &C) { 524c8cfc74bdcc999828bc232294d937fb191940d5bChandler Carruth Elements.push_back(CFGAutomaticObjDtor(VD, S), C); 525c8cfc74bdcc999828bc232294d937fb191940d5bChandler Carruth } 526c8cfc74bdcc999828bc232294d937fb191940d5bChandler Carruth 52753de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // Destructors must be inserted in reversed order. So insertion is in two 52853de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // steps. First we prepare space for some number of elements, then we insert 52953de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // the elements beginning at the last position in prepared space. 53053de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski iterator beginAutomaticObjDtorsInsert(iterator I, size_t Cnt, 5319c378f705405d37f49795d5e915989de774fe11fTed Kremenek BumpVectorContext &C) { 53253de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski return iterator(Elements.insert(I.base(), Cnt, CFGElement(), C)); 53353de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 5349c378f705405d37f49795d5e915989de774fe11fTed Kremenek iterator insertAutomaticObjDtor(iterator I, VarDecl *VD, Stmt *S) { 53553de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski *I = CFGAutomaticObjDtor(VD, S); 53653de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski return ++I; 53753de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 538fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek}; 5391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 540fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFG - Represents a source-level, intra-procedural CFG that represents the 541fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// control-flow of a Stmt. The Stmt can represent an entire function body, 542fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// or a single expression. A CFG will always contain one empty block that 543fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// represents the Exit point of the CFG. A CFG will also contain a designated 544fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Entry block. The CFG solely represents control-flow; it consists of 545fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFGBlocks which are simply containers of Stmt*'s in the AST the CFG 546fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// was constructed from. 547fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekclass CFG { 548fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekpublic: 549a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 550a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Construction & Manipulation. 551a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 552a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 5536c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek class BuildOptions { 55474fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek llvm::BitVector alwaysAddMask; 5556c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek public: 5560d28d360b5559abda755e50b855ba5e59727d9cdTed Kremenek typedef llvm::DenseMap<const Stmt *, const CFGBlock*> ForcedBlkExprs; 557ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie ForcedBlkExprs **forcedBlkExprs; 558b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek 559bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek bool PruneTriviallyFalseEdges; 560bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek bool AddEHEdges; 561bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek bool AddInitializers; 562bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek bool AddImplicitDtors; 563ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 56474fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek bool alwaysAdd(const Stmt *stmt) const { 56574fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek return alwaysAddMask[stmt->getStmtClass()]; 56674fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek } 567ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 568882998923889a2fcce9b49696506c499e22cf38fTed Kremenek BuildOptions &setAlwaysAdd(Stmt::StmtClass stmtClass, bool val = true) { 569882998923889a2fcce9b49696506c499e22cf38fTed Kremenek alwaysAddMask[stmtClass] = val; 570882998923889a2fcce9b49696506c499e22cf38fTed Kremenek return *this; 571882998923889a2fcce9b49696506c499e22cf38fTed Kremenek } 572ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 573882998923889a2fcce9b49696506c499e22cf38fTed Kremenek BuildOptions &setAllAlwaysAdd() { 574882998923889a2fcce9b49696506c499e22cf38fTed Kremenek alwaysAddMask.set(); 575bc5cb8a5fe2b88f917d47ceb58b53696a121e57eTed Kremenek return *this; 57674fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek } 5776c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek 5786c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek BuildOptions() 57974fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek : alwaysAddMask(Stmt::lastStmtConstant, false) 58074fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek ,forcedBlkExprs(0), PruneTriviallyFalseEdges(true) 58174fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek ,AddEHEdges(false) 58274fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek ,AddInitializers(false) 58374fb1a493cf5d2dd0fb51a4eadf74e85e10a3457Ted Kremenek ,AddImplicitDtors(false) {} 5846c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek }; 5856c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek 586a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// buildCFG - Builds a CFG from an AST. The responsibility to free the 5871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// constructed CFG belongs to the caller. 5889c378f705405d37f49795d5e915989de774fe11fTed Kremenek static CFG* buildCFG(const Decl *D, Stmt *AST, ASTContext *C, 589b8ad5ee345fa1fdd1fa9253f2d01f69becc88a04Ted Kremenek const BuildOptions &BO); 5901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 591a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// createBlock - Create a new block in the CFG. The CFG owns the block; 592a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// the caller should not directly free it. 5939c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock *createBlock(); 5941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 595a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// setEntry - Set the entry block of the CFG. This is typically used 596a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// only during CFG construction. Most CFG clients expect that the 597a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// entry block has no predecessors and contains no statements. 598a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek void setEntry(CFGBlock *B) { Entry = B; } 5991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 600e38158de9236dfcded7da56126134e5e3e49cb01Ted Kremenek /// setIndirectGotoBlock - Set the block used for indirect goto jumps. 601e38158de9236dfcded7da56126134e5e3e49cb01Ted Kremenek /// This is typically used only during CFG construction. 6029c378f705405d37f49795d5e915989de774fe11fTed Kremenek void setIndirectGotoBlock(CFGBlock *B) { IndirectGotoBlock = B; } 6031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 604a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 605a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // Block Iterators 606a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 607a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 608ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie typedef BumpVector<CFGBlock*> CFGBlockListTy; 609a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef CFGBlockListTy::iterator iterator; 610a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef CFGBlockListTy::const_iterator const_iterator; 611a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef std::reverse_iterator<iterator> reverse_iterator; 612a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 613fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 6149c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock & front() { return *Blocks.front(); } 6159c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock & back() { return *Blocks.back(); } 6161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 61719bb356317952445b03ee341c02f6147083c9eeaTed Kremenek iterator begin() { return Blocks.begin(); } 61819bb356317952445b03ee341c02f6147083c9eeaTed Kremenek iterator end() { return Blocks.end(); } 61919bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_iterator begin() const { return Blocks.begin(); } 6201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_iterator end() const { return Blocks.end(); } 6211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 62219bb356317952445b03ee341c02f6147083c9eeaTed Kremenek reverse_iterator rbegin() { return Blocks.rbegin(); } 62319bb356317952445b03ee341c02f6147083c9eeaTed Kremenek reverse_iterator rend() { return Blocks.rend(); } 62419bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_reverse_iterator rbegin() const { return Blocks.rbegin(); } 62519bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_reverse_iterator rend() const { return Blocks.rend(); } 6261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6279c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock & getEntry() { return *Entry; } 6289c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock & getEntry() const { return *Entry; } 6299c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock & getExit() { return *Exit; } 6309c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock & getExit() const { return *Exit; } 6317dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 6329c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock * getIndirectGotoBlock() { return IndirectGotoBlock; } 6339c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock * getIndirectGotoBlock() const { return IndirectGotoBlock; } 634ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 635f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek typedef std::vector<const CFGBlock*>::const_iterator try_block_iterator; 636f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek try_block_iterator try_blocks_begin() const { 637f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek return TryDispatchBlocks.begin(); 638f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek } 639f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek try_block_iterator try_blocks_end() const { 640f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek return TryDispatchBlocks.end(); 641f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek } 642ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 643f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek void addTryDispatchBlock(const CFGBlock *block) { 644f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek TryDispatchBlocks.push_back(block); 645f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek } 6461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 647a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 648a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek // Member templates useful for various batch operations over CFGs. 649a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek //===--------------------------------------------------------------------===// 6501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 651a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek template <typename CALLBACK> 652a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek void VisitBlockStmts(CALLBACK& O) const { 653a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek for (const_iterator I=begin(), E=end(); I != E; ++I) 654ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek for (CFGBlock::const_iterator BI=(*I)->begin(), BE=(*I)->end(); 655b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu BI != BE; ++BI) { 6563c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek if (const CFGStmt *stmt = BI->getAs<CFGStmt>()) 657f1d10d939739f1a4544926d807e4f0f9fb64be61Ted Kremenek O(const_cast<Stmt*>(stmt->getStmt())); 658b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 6591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 6601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 661a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek //===--------------------------------------------------------------------===// 662a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Introspection. 663a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 664a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 66563f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek struct BlkExprNumTy { 66663f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek const signed Idx; 66763f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek explicit BlkExprNumTy(signed idx) : Idx(idx) {} 66863f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek explicit BlkExprNumTy() : Idx(-1) {} 66963f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek operator bool() const { return Idx >= 0; } 67063f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek operator unsigned() const { assert(Idx >=0); return (unsigned) Idx; } 67163f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek }; 6721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6739c378f705405d37f49795d5e915989de774fe11fTed Kremenek bool isBlkExpr(const Stmt *S) { return getBlkExprNum(S); } 674200fbc877d50da9e53b9aa272b70ca3538ce3a66Ted Kremenek bool isBlkExpr(const Stmt *S) const { 675200fbc877d50da9e53b9aa272b70ca3538ce3a66Ted Kremenek return const_cast<CFG*>(this)->isBlkExpr(S); 676200fbc877d50da9e53b9aa272b70ca3538ce3a66Ted Kremenek } 6779c378f705405d37f49795d5e915989de774fe11fTed Kremenek BlkExprNumTy getBlkExprNum(const Stmt *S); 67863f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek unsigned getNumBlkExprs(); 6791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6800c8c5365be0176e8399e97d7da3293c79bc9da24Mike Stump /// getNumBlockIDs - Returns the total number of BlockIDs allocated (which 6810c8c5365be0176e8399e97d7da3293c79bc9da24Mike Stump /// start at 0). 6829438252ad2ecae5338df565ca33c6969e4fbfa41Ted Kremenek unsigned getNumBlockIDs() const { return NumBlockIDs; } 683a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 684a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 685a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Debugging: Pretty-Printing and Visualization. 686a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 687a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 688e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void viewCFG(const LangOptions &LO) const; 6899c378f705405d37f49795d5e915989de774fe11fTed Kremenek void print(raw_ostream &OS, const LangOptions &LO) const; 690e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void dump(const LangOptions &LO) const; 691a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 692a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 693a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // Internal: constructors and data. 694a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 695a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 6961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CFG() : Entry(NULL), Exit(NULL), IndirectGotoBlock(NULL), NumBlockIDs(0), 6977177dee8aee4b432911c91f1b788963bec0cac9fDaniel Dunbar BlkExprMap(NULL), Blocks(BlkBVC, 10) {} 6981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 69963f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek ~CFG(); 7001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 701ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek llvm::BumpPtrAllocator& getAllocator() { 702ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek return BlkBVC.getAllocator(); 703ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek } 704ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 705ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek BumpVectorContext &getBumpVectorContext() { 706ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek return BlkBVC; 707ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek } 7081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 709a36c6540346266f570b2fc7457950dea45d89988Ted Kremenekprivate: 7109c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock *Entry; 7119c378f705405d37f49795d5e915989de774fe11fTed Kremenek CFGBlock *Exit; 712a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* IndirectGotoBlock; // Special block to contain collective dispatch 713ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek // for indirect gotos 71463f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek unsigned NumBlockIDs; 7151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 71686d1777a6b7723865c1e67a7aafc797ec0a574ffTed Kremenek // BlkExprMap - An opaque pointer to prevent inclusion of DenseMap.h. 7171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // It represents a map from Expr* to integers to record the set of 71886d1777a6b7723865c1e67a7aafc797ec0a574ffTed Kremenek // block-level expressions and their "statement number" in the CFG. 7199c378f705405d37f49795d5e915989de774fe11fTed Kremenek void * BlkExprMap; 720ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 721ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek BumpVectorContext BlkBVC; 722ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 723ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek CFGBlockListTy Blocks; 724ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 725f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek /// C++ 'try' statements are modeled with an indirect dispatch block. 726f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek /// This is the collection of such blocks present in the CFG. 727f0e71aede7ccf3e311feac6a414c431f7a0fc3c8Ted Kremenek std::vector<const CFGBlock *> TryDispatchBlocks; 7281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 729fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek}; 730fa2be43dbd6fdc4414e261db69aaf35dfb21a416Ted Kremenek} // end namespace clang 7317dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 7327dba8607e59096014b7139ff20ef00870041d518Ted Kremenek//===----------------------------------------------------------------------===// 7337dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// GraphTraits specializations for CFG basic block graphs (source-level CFGs) 7347dba8607e59096014b7139ff20ef00870041d518Ted Kremenek//===----------------------------------------------------------------------===// 7357dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 7367dba8607e59096014b7139ff20ef00870041d518Ted Kremeneknamespace llvm { 7377dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 7384ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// Implement simplify_type for CFGTerminator, so that we can dyn_cast from 7394ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski/// CFGTerminator to a specific Stmt class. 7404ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderskitemplate <> struct simplify_type<const ::clang::CFGTerminator> { 7414ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski typedef const ::clang::Stmt *SimpleType; 7424ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski static SimpleType getSimplifiedValue(const ::clang::CFGTerminator &Val) { 7434ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski return Val.getStmt(); 7444ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski } 7454ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski}; 7464ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 7474ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderskitemplate <> struct simplify_type< ::clang::CFGTerminator> { 7484ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski typedef ::clang::Stmt *SimpleType; 7494ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski static SimpleType getSimplifiedValue(const ::clang::CFGTerminator &Val) { 7504ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski return const_cast<SimpleType>(Val.getStmt()); 7514ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski } 7524ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski}; 7534ba72a0b28135209c435630682febe1f854ccfa6Marcin Swiderski 7547dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// Traits for: CFGBlock 7557dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 7569c378f705405d37f49795d5e915989de774fe11fTed Kremenektemplate <> struct GraphTraits< ::clang::CFGBlock *> { 757852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock NodeType; 758852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::succ_iterator ChildIteratorType; 7591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7609c378f705405d37f49795d5e915989de774fe11fTed Kremenek static NodeType* getEntryNode(::clang::CFGBlock *BB) 7617dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return BB; } 7627dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 7637dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 7647dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_begin(); } 7651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7667dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 7677dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_end(); } 7687dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 7697dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 7709c378f705405d37f49795d5e915989de774fe11fTed Kremenektemplate <> struct GraphTraits< const ::clang::CFGBlock *> { 771852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef const ::clang::CFGBlock NodeType; 772852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::const_succ_iterator ChildIteratorType; 7731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7749c378f705405d37f49795d5e915989de774fe11fTed Kremenek static NodeType* getEntryNode(const clang::CFGBlock *BB) 7757dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return BB; } 7761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7777dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 7787dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_begin(); } 7791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7807dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 7817dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_end(); } 7827dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 7837dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 784852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<Inverse<const ::clang::CFGBlock*> > { 785852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef const ::clang::CFGBlock NodeType; 786852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::const_pred_iterator ChildIteratorType; 7877dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 788852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode(Inverse<const ::clang::CFGBlock*> G) 7897dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return G.Graph; } 7907dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 7917dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 7927dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->pred_begin(); } 7931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7947dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 7957dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->pred_end(); } 7967dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 7977dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 7987dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// Traits for: CFG 7997dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 800852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits< ::clang::CFG* > 8019c378f705405d37f49795d5e915989de774fe11fTed Kremenek : public GraphTraits< ::clang::CFGBlock *> { 8027dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 803852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFG::iterator nodes_iterator; 8041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 805852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode(::clang::CFG* F) { return &F->getEntry(); } 806852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_begin(::clang::CFG* F) { return F->begin(); } 807852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_end(::clang::CFG* F) { return F->end(); } 8087dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 8097dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 810852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<const ::clang::CFG* > 8119c378f705405d37f49795d5e915989de774fe11fTed Kremenek : public GraphTraits<const ::clang::CFGBlock *> { 8127dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 813852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFG::const_iterator nodes_iterator; 8147dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 815852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode( const ::clang::CFG* F) { 816852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return &F->getEntry(); 817852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 818852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_begin( const ::clang::CFG* F) { 819852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return F->begin(); 820852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 821852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_end( const ::clang::CFG* F) { 822852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return F->end(); 823852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 8247dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 8257dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 826852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<Inverse<const ::clang::CFG*> > 827852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek : public GraphTraits<Inverse<const ::clang::CFGBlock*> > { 8287dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 829852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFG::const_iterator nodes_iterator; 8307dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 831852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode(const ::clang::CFG* F) { return &F->getExit(); } 832852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_begin(const ::clang::CFG* F) { return F->begin();} 833852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_end(const ::clang::CFG* F) { return F->end(); } 8347dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 8357dba8607e59096014b7139ff20ef00870041d518Ted Kremenek} // end llvm namespace 836cd881d534517f09a2fae10445f9b865f49ccc6c8Ted Kremenek#endif 837