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clang: lib/Analysis/CFG.cpp File Reference

#include "clang/Analysis/CFG.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Attr.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclBase.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclGroup.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ExprCXX.h"
#include "clang/AST/OperationKinds.h"
#include "clang/AST/PrettyPrinter.h"
#include "clang/AST/Stmt.h"
#include "clang/AST/StmtCXX.h"
#include "clang/AST/StmtObjC.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/AST/Type.h"
#include "clang/Analysis/ConstructionContext.h"
#include "clang/Analysis/Support/BumpVector.h"
#include "clang/Basic/Builtins.h"
#include "clang/Basic/ExceptionSpecificationType.h"
#include "clang/Basic/JsonSupport.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/Specifiers.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/DOTGraphTraits.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/GraphWriter.h"
#include "llvm/Support/SaveAndRestore.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
#include <memory>
#include <optional>
#include <string>
#include <tuple>
#include <utility>
#include <vector>

Go to the source code of this file.

namespace   llvm   Diagnostic wrappers for TextAPI types for error reporting.
  static SourceLocation  GetEndLoc (Decl *D)   static bool  IsIntegerLiteralConstantExpr (const Expr *E)   Returns true on constant values based around a single IntegerLiteral.
  static const Expr *  tryTransformToIntOrEnumConstant (const Expr *E)   Helper for tryNormalizeBinaryOperator.
  static std::tuple< const Expr *, BinaryOperatorKind, const Expr * >  tryNormalizeBinaryOperator (const BinaryOperator *B)   Tries to interpret a binary operator into Expr Op NumExpr form, if NumExpr is an integer literal or an enum constant.
  static bool  areExprTypesCompatible (const Expr *E1, const Expr *E2)   For an expression x == Foo && x == Bar, this determines whether the Foo and Bar are either of the same enumeration type, or both integer literals.
  static TryResult  bothKnownTrue (TryResult R1, TryResult R2)   static const VariableArrayType *  FindVA (const Type *t)   static QualType  getReferenceInitTemporaryType (const Expr *Init, bool *FoundMTE=nullptr)   Retrieve the type of the temporary object whose lifetime was extended by a local reference with the given initializer.
  static bool  isFallthroughStatement (const AttributedStmt *A)   static bool  CanThrow (Expr *E, ASTContext &Ctx)   static bool  shouldAddCase (bool &switchExclusivelyCovered, const Expr::EvalResult *switchCond, const CaseStmt *CS, ASTContext &Ctx)   static void  print_initializer (raw_ostream &OS, StmtPrinterHelper &Helper, const CXXCtorInitializer *I)   static void  print_construction_context (raw_ostream &OS, StmtPrinterHelper &Helper, const ConstructionContext *CC)   static void  print_elem (raw_ostream &OS, StmtPrinterHelper &Helper, const CFGElement &E)   static void  print_block (raw_ostream &OS, const CFG *cfg, const CFGBlock &B, StmtPrinterHelper &Helper, bool print_edges, bool ShowColors)   static bool  isImmediateSinkBlock (const CFGBlock *Blk)   ◆ areExprTypesCompatible() static bool areExprTypesCompatible ( const Expr *  E1, const Expr *  E2  ) static

For an expression x == Foo && x == Bar, this determines whether the Foo and Bar are either of the same enumeration type, or both integer literals.

It's an error to pass this arguments that are not either IntegerLiterals or DeclRefExprs (that have decls of type EnumConstantDecl)

Definition at line 148 of file CFG.cpp.

◆ bothKnownTrue() static TryResult bothKnownTrue ( TryResult  R1, TryResult  R2  ) static

Definition at line 423 of file CFG.cpp.

◆ CanThrow() ◆ FindVA() ◆ GetEndLoc() ◆ getReferenceInitTemporaryType() static QualType getReferenceInitTemporaryType ( const Expr *  Init, bool *  FoundMTE = nullptr  ) static ◆ isFallthroughStatement() ◆ isImmediateSinkBlock() ◆ IsIntegerLiteralConstantExpr() static bool IsIntegerLiteralConstantExpr ( const Expr *  E ) static

Returns true on constant values based around a single IntegerLiteral.

Allow for use of parentheses, integer casts, and negative signs. FIXME: it would be good to unify this function with getIntegerLiteralSubexpressionValue at some point given the similarity between the functions.

Definition at line 79 of file CFG.cpp.

References E, and clang::Expr::IgnoreParens().

Referenced by tryTransformToIntOrEnumConstant().

◆ print_block() static void print_block ( raw_ostream &  OS, const CFG *  cfg, const CFGBlock &  B, StmtPrinterHelper &  Helper, bool  print_edges, bool  ShowColors  ) static

Definition at line 5925 of file CFG.cpp.

References clang::CFGBlock::begin(), clang::C, E, clang::CFGBlock::end(), clang::CFGBlock::getBlockID(), clang::CFG::getEntry(), clang::CXXCatchStmt::getExceptionDecl(), clang::CFG::getExit(), clang::SEHExceptStmt::getFilterExpr(), clang::CFG::getIndirectGotoBlock(), clang::CFGBlock::getLabel(), clang::LabelStmt::getName(), clang::CFGBlock::getTerminator(), clang::CFGBlock::hasNoReturnElement(), clang::CFGTerminator::isValid(), clang::CFGBlock::Label, clang::CFGBlock::pred_begin(), clang::CFGBlock::pred_empty(), clang::CFGBlock::pred_end(), clang::CFGBlock::pred_size(), print_elem(), clang::Stmt::printPretty(), ShowColors, clang::CFGBlock::succ_begin(), clang::CFGBlock::succ_empty(), clang::CFGBlock::succ_end(), and clang::CFGBlock::succ_size().

Referenced by llvm::DOTGraphTraits< const CFG * >::getNodeLabel(), clang::CFGBlock::print(), and clang::CFG::print().

◆ print_construction_context() static void print_construction_context ( raw_ostream &  OS, StmtPrinterHelper &  Helper, const ConstructionContext *  CC  ) static

Definition at line 5675 of file CFG.cpp.

References clang::ConstructionContext::ArgumentKind, clang::ConstructionContext::CXX17ElidedCopyConstructorInitializerKind, clang::ConstructionContext::CXX17ElidedCopyReturnedValueKind, clang::ConstructionContext::CXX17ElidedCopyVariableKind, clang::ConstructionContext::ElidedTemporaryObjectKind, clang::ConstructionContext::getKind(), clang::ConstructionContext::LambdaCaptureKind, clang::ConstructionContext::NewAllocatedObjectKind, print_initializer(), clang::ConstructionContext::SimpleConstructorInitializerKind, clang::ConstructionContext::SimpleReturnedValueKind, clang::ConstructionContext::SimpleTemporaryObjectKind, and clang::ConstructionContext::SimpleVariableKind.

Referenced by print_elem().

◆ print_elem() static void print_elem ( raw_ostream &  OS, StmtPrinterHelper &  Helper, const CFGElement &  E  ) static

Definition at line 5769 of file CFG.cpp.

References clang::CFGElement::AutomaticObjectDtor, clang::CFGElement::BaseDtor, clang::CompoundStmt::body_rbegin(), clang::CFGElement::CleanupFunction, clang::CFGElement::Constructor, clang::CFGElement::CXXRecordTypedCall, clang::CFGElement::DeleteDtor, E, clang::CFGNewAllocator::getAllocatorExpr(), clang::CXXDeleteExpr::getArgument(), clang::Type::getAsCXXRecordDecl(), clang::Type::getBaseElementTypeUnsafe(), clang::CFGDeleteDtor::getCXXRecordDecl(), clang::CFGDeleteDtor::getDeleteExpr(), clang::CFGInitializer::getInitializer(), clang::NamedDecl::getName(), clang::BinaryOperator::getOpcode(), clang::NamedDecl::getQualifiedNameAsString(), getReferenceInitTemporaryType(), clang::BinaryOperator::getRHS(), clang::CFGStmt::getStmt(), clang::Stmt::getStmtClassName(), clang::StmtExpr::getSubStmt(), clang::ValueDecl::getType(), clang::CXXBaseSpecifier::getType(), clang::Expr::getType(), clang::CFGLifetimeEnds::getVarDecl(), clang::CFGScopeBegin::getVarDecl(), clang::CFGScopeEnd::getVarDecl(), clang::CFGAutomaticObjDtor::getVarDecl(), clang::CFGElement::Initializer, clang::Type::isReferenceType(), clang::CFGElement::LifetimeEnds, clang::CFGElement::LoopExit, clang::CFGElement::MemberDtor, clang::CFGElement::NewAllocator, clang::QualType::print(), print_construction_context(), print_initializer(), clang::CFGElement::ScopeBegin, clang::CFGElement::ScopeEnd, clang::CFGElement::Statement, clang::T, and clang::CFGElement::TemporaryDtor.

Referenced by clang::CFGElement::dumpToStream(), and print_block().

◆ print_initializer() static void print_initializer ( raw_ostream &  OS, StmtPrinterHelper &  Helper, const CXXCtorInitializer *  I  ) static ◆ shouldAddCase() ◆ tryNormalizeBinaryOperator() ◆ tryTransformToIntOrEnumConstant() static const Expr * tryTransformToIntOrEnumConstant ( const Expr *  E ) static ◆ GraphHelper StmtPrinterHelper* GraphHelper static

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