CFG.h revision 6c2497248bc4f7fd8e5fb0a206d20abbf0e16645
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 187dba8607e59096014b7139ff20ef00870041d518Ted Kremenek#include "llvm/ADT/GraphTraits.h" 19ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek#include "llvm/Support/Allocator.h" 20fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek#include <list> 21fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek#include <vector> 22c1581a0d64b0ee4f822ed2fca4442a111d03569aHartmut Kaiser#include <cassert> 23fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 24e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattnernamespace llvm { 25e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner class raw_ostream; 26e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner} 27fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremeneknamespace clang { 2842a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class Stmt; 2963f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek class Expr; 3042a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class CFG; 3142a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class PrinterHelper; 32e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner class LangOptions; 33e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump class ASTContext; 34e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump 35fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFGBlock - Represents a single basic block in a source-level CFG. 36fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// It consists of: 37fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 38fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (1) A set of statements/expressions (which may contain subexpressions). 39fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (2) A "terminator" statement (not in the set of statements). 40fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (3) A list of successors and predecessors. 41fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 42fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Terminator: The terminator represents the type of control-flow that occurs 43fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// at the end of the basic block. The terminator is a Stmt* referring to an 44fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// AST node that has control-flow: if-statements, breaks, loops, etc. 45fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// If the control-flow is conditional, the condition expression will appear 46fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// within the set of statements in the block (usually the last statement). 47fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 48fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Predecessors: the order in the set of predecessors is arbitrary. 49fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 50fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Successors: the order in the set of successors is NOT arbitrary. We 51fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// currently have the following orderings based on the terminator: 52fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 53fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Terminator Successor Ordering 54fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// ----------------------------------------------------- 55fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// if Then Block; Else Block 569cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek/// ? operator LHS expression; RHS expression 579cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek/// &&, || expression that uses result of && or ||, RHS 58fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 59fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekclass CFGBlock { 606c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek class StatementList { 616c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef std::vector<Stmt*> ImplTy; 626c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek ImplTy Impl; 636c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek public: 646c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef std::reverse_iterator<ImplTy::iterator> iterator; 656c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef std::reverse_iterator<ImplTy::const_iterator> const_iterator; 666c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef ImplTy::iterator reverse_iterator; 676c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef ImplTy::const_iterator const_reverse_iterator; 686c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 696c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek void push_back(Stmt *s) { Impl.push_back(s); } 706c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek Stmt *front() const { return Impl.back(); } 716c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek Stmt *back() const { return Impl.front(); } 726c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 736c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek iterator begin() { return Impl.rbegin(); } 746c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek iterator end() { return Impl.rend(); } 756c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_iterator begin() const { return Impl.rbegin(); } 766c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_iterator end() const { return Impl.rend(); } 776c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek reverse_iterator rbegin() { return Impl.begin(); } 786c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek reverse_iterator rend() { return Impl.end(); } 796c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_reverse_iterator rbegin() const { return Impl.begin(); } 806c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_reverse_iterator rend() const { return Impl.end(); } 816c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 826c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek Stmt* operator[](size_t i) const { 836c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek assert(i < Impl.size()); 846c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek return Impl[Impl.size() - 1 - i]; 856c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek } 866c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 876c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek size_t size() const { return Impl.size(); } 886c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek bool empty() const { return Impl.empty(); } 896c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek }; 906c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 91fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// Stmts - The set of statements in the basic block. 926c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek StatementList Stmts; 939cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek 949cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// Label - An (optional) label that prefixes the executable 959cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// statements in the block. When this variable is non-NULL, it is 969cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// either an instance of LabelStmt or SwitchCase. 973575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek Stmt *Label; 981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 999cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// Terminator - The terminator for a basic block that 100fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// indicates the type of control-flow that occurs between a block 101fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// and its successors. 1023575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek Stmt *Terminator; 1031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1043575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// LoopTarget - Some blocks are used to represent the "loop edge" to 1053575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// the start of a loop from within the loop body. This Stmt* will be 1063575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// refer to the loop statement for such blocks (and be null otherwise). 1071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Stmt *LoopTarget; 1081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 109fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// BlockID - A numerical ID assigned to a CFGBlock during construction 110fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// of the CFG. 111fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned BlockID; 1121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 113fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// Predecessors/Successors - Keep track of the predecessor / successor 114fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// CFG blocks. 115fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef std::vector<CFGBlock*> AdjacentBlocks; 116fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek AdjacentBlocks Preds; 117fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek AdjacentBlocks Succs; 1181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 119fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekpublic: 1209cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek explicit CFGBlock(unsigned blockid) : Label(NULL), Terminator(NULL), 1213575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek LoopTarget(NULL), BlockID(blockid) {} 122fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek ~CFGBlock() {}; 123fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 124fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // Statement iterators 1256c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef StatementList::iterator iterator; 1266c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef StatementList::const_iterator const_iterator; 1276c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef StatementList::reverse_iterator reverse_iterator; 1286c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef StatementList::const_reverse_iterator const_reverse_iterator; 1291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1305156ad8b2e64850a13d4e9d9ddeb3f9c6b9d3ebbTed Kremenek Stmt* front() const { return Stmts.front(); } 1315156ad8b2e64850a13d4e9d9ddeb3f9c6b9d3ebbTed Kremenek Stmt* back() const { return Stmts.back(); } 1321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 133fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek iterator begin() { return Stmts.begin(); } 134fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek iterator end() { return Stmts.end(); } 135fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_iterator begin() const { return Stmts.begin(); } 1361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_iterator end() const { return Stmts.end(); } 137fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 138fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek reverse_iterator rbegin() { return Stmts.rbegin(); } 139fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek reverse_iterator rend() { return Stmts.rend(); } 140fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_reverse_iterator rbegin() const { return Stmts.rbegin(); } 141fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_reverse_iterator rend() const { return Stmts.rend(); } 1421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 143fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned size() const { return Stmts.size(); } 144fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek bool empty() const { return Stmts.empty(); } 145be7a7d6f2e5b86807afd08a568863df973baaa38Ted Kremenek 1466c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek Stmt* operator[](size_t i) const { return Stmts[i]; } 1476c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 1481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 149fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // CFG iterators 150fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::iterator pred_iterator; 151fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_iterator const_pred_iterator; 152fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::reverse_iterator pred_reverse_iterator; 153fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_reverse_iterator const_pred_reverse_iterator; 154fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 155fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::iterator succ_iterator; 156fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_iterator const_succ_iterator; 157fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::reverse_iterator succ_reverse_iterator; 158fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_reverse_iterator const_succ_reverse_iterator; 1591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 160fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_iterator pred_begin() { return Preds.begin(); } 161fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_iterator pred_end() { return Preds.end(); } 162fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_iterator pred_begin() const { return Preds.begin(); } 163fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_iterator pred_end() const { return Preds.end(); } 1641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 165fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_reverse_iterator pred_rbegin() { return Preds.rbegin(); } 1661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump pred_reverse_iterator pred_rend() { return Preds.rend(); } 167fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_reverse_iterator pred_rbegin() const { return Preds.rbegin(); } 168fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_reverse_iterator pred_rend() const { return Preds.rend(); } 169fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 1701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump succ_iterator succ_begin() { return Succs.begin(); } 171fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_iterator succ_end() { return Succs.end(); } 172fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_iterator succ_begin() const { return Succs.begin(); } 1731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_succ_iterator succ_end() const { return Succs.end(); } 1741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 175fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_reverse_iterator succ_rbegin() { return Succs.rbegin(); } 176fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_reverse_iterator succ_rend() { return Succs.rend(); } 177fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_reverse_iterator succ_rbegin() const { return Succs.rbegin(); } 178fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_reverse_iterator succ_rend() const { return Succs.rend(); } 179fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 180fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned succ_size() const { return Succs.size(); } 181fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek bool succ_empty() const { return Succs.empty(); } 182fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 183fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned pred_size() const { return Preds.size(); } 184fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek bool pred_empty() const { return Preds.empty(); } 1851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 186fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // Manipulation of block contents 1871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 188fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek void appendStmt(Stmt* Statement) { Stmts.push_back(Statement); } 1899cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek void setTerminator(Stmt* Statement) { Terminator = Statement; } 1909cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek void setLabel(Stmt* Statement) { Label = Statement; } 1913575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek void setLoopTarget(const Stmt *loopTarget) { LoopTarget = loopTarget; } 1929cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek 1939cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek Stmt* getTerminator() { return Terminator; } 1949cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek const Stmt* getTerminator() const { return Terminator; } 1951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 196390e48b15ad93f85bfd1e33b9992c198fa0db475Ted Kremenek Stmt* getTerminatorCondition(); 1971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 198390e48b15ad93f85bfd1e33b9992c198fa0db475Ted Kremenek const Stmt* getTerminatorCondition() const { 199411cdee0b490f79428c9eb977f25199eb7d21cd8Ted Kremenek return const_cast<CFGBlock*>(this)->getTerminatorCondition(); 200411cdee0b490f79428c9eb977f25199eb7d21cd8Ted Kremenek } 2011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2023575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek const Stmt *getLoopTarget() const { return LoopTarget; } 2031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2049c2535a35db35b3a821a0d0c36a01a16f52f1ad0Ted Kremenek bool hasBinaryBranchTerminator() const; 2051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2069cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek Stmt* getLabel() { return Label; } 2079cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek const Stmt* getLabel() const { return Label; } 2081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 209fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek void reverseStmts(); 2101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 211fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek void addSuccessor(CFGBlock* Block) { 212e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump if (Block) 213e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump Block->Preds.push_back(this); 214fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek Succs.push_back(Block); 215fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek } 2161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 217fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned getBlockID() const { return BlockID; } 2181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 219e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void dump(const CFG *cfg, const LangOptions &LO) const; 220e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void print(llvm::raw_ostream &OS, const CFG* cfg, const LangOptions &LO) const; 221e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void printTerminator(llvm::raw_ostream &OS, const LangOptions &LO) const; 222fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek}; 2231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 224fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 225fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFG - Represents a source-level, intra-procedural CFG that represents the 226fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// control-flow of a Stmt. The Stmt can represent an entire function body, 227fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// or a single expression. A CFG will always contain one empty block that 228fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// represents the Exit point of the CFG. A CFG will also contain a designated 229fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Entry block. The CFG solely represents control-flow; it consists of 230fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFGBlocks which are simply containers of Stmt*'s in the AST the CFG 231fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// was constructed from. 232fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekclass CFG { 233fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekpublic: 234a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 235a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Construction & Manipulation. 236a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 237a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 238a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// buildCFG - Builds a CFG from an AST. The responsibility to free the 2391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// constructed CFG belongs to the caller. 2401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static CFG* buildCFG(Stmt* AST, ASTContext *C); 2411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 242a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// createBlock - Create a new block in the CFG. The CFG owns the block; 243a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// the caller should not directly free it. 244a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* createBlock(); 2451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 246a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// setEntry - Set the entry block of the CFG. This is typically used 247a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// only during CFG construction. Most CFG clients expect that the 248a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// entry block has no predecessors and contains no statements. 249a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek void setEntry(CFGBlock *B) { Entry = B; } 2501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 251e38158de9236dfcded7da56126134e5e3e49cb01Ted Kremenek /// setIndirectGotoBlock - Set the block used for indirect goto jumps. 252e38158de9236dfcded7da56126134e5e3e49cb01Ted Kremenek /// This is typically used only during CFG construction. 253a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek void setIndirectGotoBlock(CFGBlock* B) { IndirectGotoBlock = B; } 2541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 255a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 256a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // Block Iterators 257a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 258a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 259a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef std::list<CFGBlock> CFGBlockListTy; 2601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 261a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef CFGBlockListTy::iterator iterator; 262a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef CFGBlockListTy::const_iterator const_iterator; 263a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef std::reverse_iterator<iterator> reverse_iterator; 264a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 265fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 26619bb356317952445b03ee341c02f6147083c9eeaTed Kremenek CFGBlock& front() { return Blocks.front(); } 26719bb356317952445b03ee341c02f6147083c9eeaTed Kremenek CFGBlock& back() { return Blocks.back(); } 2681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 26919bb356317952445b03ee341c02f6147083c9eeaTed Kremenek iterator begin() { return Blocks.begin(); } 27019bb356317952445b03ee341c02f6147083c9eeaTed Kremenek iterator end() { return Blocks.end(); } 27119bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_iterator begin() const { return Blocks.begin(); } 2721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_iterator end() const { return Blocks.end(); } 2731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27419bb356317952445b03ee341c02f6147083c9eeaTed Kremenek reverse_iterator rbegin() { return Blocks.rbegin(); } 27519bb356317952445b03ee341c02f6147083c9eeaTed Kremenek reverse_iterator rend() { return Blocks.rend(); } 27619bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_reverse_iterator rbegin() const { return Blocks.rbegin(); } 27719bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_reverse_iterator rend() const { return Blocks.rend(); } 2781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27919bb356317952445b03ee341c02f6147083c9eeaTed Kremenek CFGBlock& getEntry() { return *Entry; } 2807dba8607e59096014b7139ff20ef00870041d518Ted Kremenek const CFGBlock& getEntry() const { return *Entry; } 28119bb356317952445b03ee341c02f6147083c9eeaTed Kremenek CFGBlock& getExit() { return *Exit; } 2827dba8607e59096014b7139ff20ef00870041d518Ted Kremenek const CFGBlock& getExit() const { return *Exit; } 2837dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 2847dba8607e59096014b7139ff20ef00870041d518Ted Kremenek CFGBlock* getIndirectGotoBlock() { return IndirectGotoBlock; } 2857dba8607e59096014b7139ff20ef00870041d518Ted Kremenek const CFGBlock* getIndirectGotoBlock() const { return IndirectGotoBlock; } 2861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 287a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 288a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek // Member templates useful for various batch operations over CFGs. 289a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek //===--------------------------------------------------------------------===// 2901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 291a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek template <typename CALLBACK> 292a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek void VisitBlockStmts(CALLBACK& O) const { 293a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek for (const_iterator I=begin(), E=end(); I != E; ++I) 294a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek for (CFGBlock::const_iterator BI=I->begin(), BE=I->end(); BI != BE; ++BI) 295a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek O(*BI); 2961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 2971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 298a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek //===--------------------------------------------------------------------===// 299a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Introspection. 300a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 301a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 30263f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek struct BlkExprNumTy { 30363f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek const signed Idx; 30463f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek explicit BlkExprNumTy(signed idx) : Idx(idx) {} 30563f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek explicit BlkExprNumTy() : Idx(-1) {} 30663f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek operator bool() const { return Idx >= 0; } 30763f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek operator unsigned() const { assert(Idx >=0); return (unsigned) Idx; } 30863f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek }; 3091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 31086946745225096243f6969dc745267b78fc211a6Ted Kremenek bool isBlkExpr(const Stmt* S) { return getBlkExprNum(S); } 31186946745225096243f6969dc745267b78fc211a6Ted Kremenek BlkExprNumTy getBlkExprNum(const Stmt* S); 31263f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek unsigned getNumBlkExprs(); 3131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3140c8c5365be0176e8399e97d7da3293c79bc9da24Mike Stump /// getNumBlockIDs - Returns the total number of BlockIDs allocated (which 3150c8c5365be0176e8399e97d7da3293c79bc9da24Mike Stump /// start at 0). 3169438252ad2ecae5338df565ca33c6969e4fbfa41Ted Kremenek unsigned getNumBlockIDs() const { return NumBlockIDs; } 317a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 318a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 319a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Debugging: Pretty-Printing and Visualization. 320a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 321a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 322e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void viewCFG(const LangOptions &LO) const; 323e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void print(llvm::raw_ostream& OS, const LangOptions &LO) const; 324e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void dump(const LangOptions &LO) const; 325a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 326a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 327a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // Internal: constructors and data. 328a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 329a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 3301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CFG() : Entry(NULL), Exit(NULL), IndirectGotoBlock(NULL), NumBlockIDs(0), 331d452758bb6b59340528a26def9ecc24b329d4ecfTed Kremenek BlkExprMap(NULL) {}; 3321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 33363f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek ~CFG(); 3341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 335ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek llvm::BumpPtrAllocator& getAllocator() { 336ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek return Alloc; 337ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek } 3381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 339a36c6540346266f570b2fc7457950dea45d89988Ted Kremenekprivate: 340a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* Entry; 341a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* Exit; 342a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* IndirectGotoBlock; // Special block to contain collective dispatch 343a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // for indirect gotos 344a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlockListTy Blocks; 34563f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek unsigned NumBlockIDs; 3461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34786d1777a6b7723865c1e67a7aafc797ec0a574ffTed Kremenek // BlkExprMap - An opaque pointer to prevent inclusion of DenseMap.h. 3481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // It represents a map from Expr* to integers to record the set of 34986d1777a6b7723865c1e67a7aafc797ec0a574ffTed Kremenek // block-level expressions and their "statement number" in the CFG. 35063f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek void* BlkExprMap; 3511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 352d452758bb6b59340528a26def9ecc24b329d4ecfTed Kremenek /// Alloc - An internal allocator. 3531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::BumpPtrAllocator Alloc; 354fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek}; 355fa2be43dbd6fdc4414e261db69aaf35dfb21a416Ted Kremenek} // end namespace clang 3567dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 3577dba8607e59096014b7139ff20ef00870041d518Ted Kremenek//===----------------------------------------------------------------------===// 3587dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// GraphTraits specializations for CFG basic block graphs (source-level CFGs) 3597dba8607e59096014b7139ff20ef00870041d518Ted Kremenek//===----------------------------------------------------------------------===// 3607dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 3617dba8607e59096014b7139ff20ef00870041d518Ted Kremeneknamespace llvm { 3627dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 3637dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// Traits for: CFGBlock 3647dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 3657dba8607e59096014b7139ff20ef00870041d518Ted Kremenektemplate <> struct GraphTraits<clang::CFGBlock* > { 3667dba8607e59096014b7139ff20ef00870041d518Ted Kremenek typedef clang::CFGBlock NodeType; 3677dba8607e59096014b7139ff20ef00870041d518Ted Kremenek typedef clang::CFGBlock::succ_iterator ChildIteratorType; 3681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3697dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static NodeType* getEntryNode(clang::CFGBlock* BB) 3707dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return BB; } 3717dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 3727dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 3737dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_begin(); } 3741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3757dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 3767dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_end(); } 3777dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 3787dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 3797dba8607e59096014b7139ff20ef00870041d518Ted Kremenektemplate <> struct GraphTraits<const clang::CFGBlock* > { 3807dba8607e59096014b7139ff20ef00870041d518Ted Kremenek typedef const clang::CFGBlock NodeType; 3817dba8607e59096014b7139ff20ef00870041d518Ted Kremenek typedef clang::CFGBlock::const_succ_iterator ChildIteratorType; 3821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3837dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static NodeType* getEntryNode(const clang::CFGBlock* BB) 3847dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return BB; } 3851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3867dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 3877dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_begin(); } 3881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3897dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 3907dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_end(); } 3917dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 3927dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 3937dba8607e59096014b7139ff20ef00870041d518Ted Kremenektemplate <> struct GraphTraits<Inverse<const clang::CFGBlock*> > { 3947dba8607e59096014b7139ff20ef00870041d518Ted Kremenek typedef const clang::CFGBlock NodeType; 3957dba8607e59096014b7139ff20ef00870041d518Ted Kremenek typedef clang::CFGBlock::const_pred_iterator ChildIteratorType; 3967dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 3977dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static NodeType *getEntryNode(Inverse<const clang::CFGBlock*> G) 3987dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return G.Graph; } 3997dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 4007dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 4017dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->pred_begin(); } 4021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4037dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 4047dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->pred_end(); } 4057dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 4067dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 4077dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// Traits for: CFG 4087dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 4091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumptemplate <> struct GraphTraits<clang::CFG* > 4107dba8607e59096014b7139ff20ef00870041d518Ted Kremenek : public GraphTraits<clang::CFGBlock* > { 4117dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 4127dba8607e59096014b7139ff20ef00870041d518Ted Kremenek typedef clang::CFG::iterator nodes_iterator; 4131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static NodeType *getEntryNode(clang::CFG* F) { return &F->getEntry(); } 4157dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static nodes_iterator nodes_begin(clang::CFG* F) { return F->begin(); } 4167dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static nodes_iterator nodes_end(clang::CFG* F) { return F->end(); } 4177dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 4187dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 4191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumptemplate <> struct GraphTraits< const clang::CFG* > 4207dba8607e59096014b7139ff20ef00870041d518Ted Kremenek : public GraphTraits< const clang::CFGBlock* > { 4217dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 4221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump typedef clang::CFG::const_iterator nodes_iterator; 4237dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 4247dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static NodeType *getEntryNode( const clang::CFG* F) { return &F->getEntry(); } 4257dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static nodes_iterator nodes_begin( const clang::CFG* F) { return F->begin(); } 4267dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static nodes_iterator nodes_end( const clang::CFG* F) { return F->end(); } 4277dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 4287dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 4297dba8607e59096014b7139ff20ef00870041d518Ted Kremenektemplate <> struct GraphTraits<Inverse<const clang::CFG*> > 4307dba8607e59096014b7139ff20ef00870041d518Ted Kremenek : public GraphTraits<Inverse<const clang::CFGBlock*> > { 4317dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 4327dba8607e59096014b7139ff20ef00870041d518Ted Kremenek typedef clang::CFG::const_iterator nodes_iterator; 4337dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 4347dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static NodeType *getEntryNode(const clang::CFG* F) { return &F->getExit(); } 4357dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static nodes_iterator nodes_begin(const clang::CFG* F) { return F->begin();} 4367dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static nodes_iterator nodes_end(const clang::CFG* F) { return F->end(); } 4377dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 4381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4397dba8607e59096014b7139ff20ef00870041d518Ted Kremenek} // end llvm namespace 440cd881d534517f09a2fae10445f9b865f49ccc6c8Ted Kremenek 441cd881d534517f09a2fae10445f9b865f49ccc6c8Ted Kremenek#endif 442