clang
3.9.0
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#include "clang/AST/APValue.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTDiagnostic.h"
#include "clang/AST/CharUnits.h"
#include "clang/AST/Expr.h"
#include "clang/AST/RecordLayout.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/AST/TypeLoc.h"
#include "clang/Basic/Builtins.h"
#include "clang/Basic/TargetInfo.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/raw_ostream.h"
#include <cstring>
#include <functional>
#include "clang/AST/TypeNodes.def"
#include "clang/AST/BuiltinTypes.def"
#include "clang/Basic/OpenCLImageTypes.def"
#include "clang/AST/StmtNodes.inc"
Go to the source code of this file.
Macros | |
#define | TYPE(ID, BASE) |
#define | DEPENDENT_TYPE(ID, BASE) case Type::ID: |
#define | NON_CANONICAL_TYPE(ID, BASE) case Type::ID: |
#define | NON_CANONICAL_UNLESS_DEPENDENT_TYPE(ID, BASE) case Type::ID: |
#define | BUILTIN_TYPE(ID, SINGLETON_ID) |
#define | SIGNED_TYPE(ID, SINGLETON_ID) case BuiltinType::ID: return integer_type_class; |
#define | FLOATING_TYPE(ID, SINGLETON_ID) case BuiltinType::ID: return real_type_class; |
#define | PLACEHOLDER_TYPE(ID, SINGLETON_ID) case BuiltinType::ID: break; |
#define | IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) case BuiltinType::Id: |
#define | ABSTRACT_STMT(Node) |
#define | STMT(Node, Base) case Expr::Node##Class: |
#define | EXPR(Node, Base) |
Enumerations | |
enum | CheckSubobjectKind |
enum | AccessKinds { AK_Read, AK_Assign, AK_Increment, AK_Decrement } |
Kinds of access we can perform on an object, for diagnostics. More... | |
enum | EvalStmtResult |
enum | ICEKind |
Functions | |
static bool | IsGlobalLValue (APValue::LValueBase B) |
static void | describeCall (CallStackFrame *Frame, raw_ostream &Out) |
Produce a string describing the given constexpr call. More... | |
static bool | Evaluate (APValue &Result, EvalInfo &Info, const Expr *E) |
static bool | EvaluateInPlace (APValue &Result, EvalInfo &Info, const LValue &This, const Expr *E, bool AllowNonLiteralTypes) |
EvaluateInPlace - Evaluate an expression in-place in an APValue. More... | |
static bool | EvaluateLValue (const Expr *E, LValue &Result, EvalInfo &Info) |
Evaluate an expression as an lvalue. More... | |
static bool | EvaluatePointer (const Expr *E, LValue &Result, EvalInfo &Info) |
static bool | EvaluateMemberPointer (const Expr *E, MemberPtr &Result, EvalInfo &Info) |
static bool | EvaluateTemporary (const Expr *E, LValue &Result, EvalInfo &Info) |
Evaluate an expression of record type as a temporary. More... | |
static bool | EvaluateInteger (const Expr *E, APSInt &Result, EvalInfo &Info) |
static bool | EvaluateIntegerOrLValue (const Expr *E, APValue &Result, EvalInfo &Info) |
EvaluateIntegerOrLValue - Evaluate an rvalue integral-typed expression, and produce either the integer value or a pointer. More... | |
static bool | EvaluateFloat (const Expr *E, APFloat &Result, EvalInfo &Info) |
static bool | EvaluateComplex (const Expr *E, ComplexValue &Res, EvalInfo &Info) |
static bool | EvaluateAtomic (const Expr *E, APValue &Result, EvalInfo &Info) |
static bool | EvaluateAsRValue (EvalInfo &Info, const Expr *E, APValue &Result) |
EvaluateAsRValue - Try to evaluate this expression, performing an implicit lvalue-to-rvalue cast if it is an lvalue. More... | |
static bool | EvaluateIgnoredValue (EvalInfo &Info, const Expr *E) |
Evaluate an expression to see if it had side-effects, and discard its result. More... | |
static int64_t | getExtValue (const APSInt &Value) |
Sign- or zero-extend a value to 64 bits. More... | |
static bool | IsStringLiteralCall (const CallExpr *E) |
Should this call expression be treated as a string literal? More... | |
static void | NoteLValueLocation (EvalInfo &Info, APValue::LValueBase Base) |
static bool | CheckLValueConstantExpression (EvalInfo &Info, SourceLocation Loc, QualType Type, const LValue &LVal) |
Check that this reference or pointer core constant expression is a valid value for an address or reference constant expression. More... | |
static bool | CheckLiteralType (EvalInfo &Info, const Expr *E, const LValue *This=nullptr) |
Check that this core constant expression is of literal type, and if not, produce an appropriate diagnostic. More... | |
static bool | CheckConstantExpression (EvalInfo &Info, SourceLocation DiagLoc, QualType Type, const APValue &Value) |
Check that this core constant expression value is a valid value for a constant expression. More... | |
static const ValueDecl * | GetLValueBaseDecl (const LValue &LVal) |
static bool | IsLiteralLValue (const LValue &Value) |
static bool | IsWeakLValue (const LValue &Value) |
static bool | isZeroSized (const LValue &Value) |
static bool | EvalPointerValueAsBool (const APValue &Value, bool &Result) |
static bool | HandleConversionToBool (const APValue &Val, bool &Result) |
static bool | EvaluateAsBooleanCondition (const Expr *E, bool &Result, EvalInfo &Info) |
template<typename T > | |
static bool | HandleOverflow (EvalInfo &Info, const Expr *E, const T &SrcValue, QualType DestType) |
static bool | HandleFloatToIntCast (EvalInfo &Info, const Expr *E, QualType SrcType, const APFloat &Value, QualType DestType, APSInt &Result) |
static bool | HandleFloatToFloatCast (EvalInfo &Info, const Expr *E, QualType SrcType, QualType DestType, APFloat &Result) |
static APSInt | HandleIntToIntCast (EvalInfo &Info, const Expr *E, QualType DestType, QualType SrcType, const APSInt &Value) |
static bool | HandleIntToFloatCast (EvalInfo &Info, const Expr *E, QualType SrcType, const APSInt &Value, QualType DestType, APFloat &Result) |
static bool | truncateBitfieldValue (EvalInfo &Info, const Expr *E, APValue &Value, const FieldDecl *FD) |
static bool | EvalAndBitcastToAPInt (EvalInfo &Info, const Expr *E, llvm::APInt &Res) |
template<typename Operation > | |
static bool | CheckedIntArithmetic (EvalInfo &Info, const Expr *E, const APSInt &LHS, const APSInt &RHS, unsigned BitWidth, Operation Op, APSInt &Result) |
Perform the given integer operation, which is known to need at most BitWidth bits, and check for overflow in the original type (if that type was not an unsigned type). More... | |
static bool | handleIntIntBinOp (EvalInfo &Info, const Expr *E, const APSInt &LHS, BinaryOperatorKind Opcode, APSInt RHS, APSInt &Result) |
Perform the given binary integer operation. More... | |
static bool | handleFloatFloatBinOp (EvalInfo &Info, const Expr *E, APFloat &LHS, BinaryOperatorKind Opcode, const APFloat &RHS) |
Perform the given binary floating-point operation, in-place, on LHS. More... | |
static bool | CastToDerivedClass (EvalInfo &Info, const Expr *E, LValue &Result, const RecordDecl *TruncatedType, unsigned TruncatedElements) |
Cast an lvalue referring to a base subobject to a derived class, by truncating the lvalue's path to the given length. More... | |
static bool | HandleLValueDirectBase (EvalInfo &Info, const Expr *E, LValue &Obj, const CXXRecordDecl *Derived, const CXXRecordDecl *Base, const ASTRecordLayout *RL=nullptr) |
static bool | HandleLValueBase (EvalInfo &Info, const Expr *E, LValue &Obj, const CXXRecordDecl *DerivedDecl, const CXXBaseSpecifier *Base) |
static bool | HandleLValueBasePath (EvalInfo &Info, const CastExpr *E, QualType Type, LValue &Result) |
static bool | HandleLValueMember (EvalInfo &Info, const Expr *E, LValue &LVal, const FieldDecl *FD, const ASTRecordLayout *RL=nullptr) |
Update LVal to refer to the given field, which must be a member of the type currently described by LVal. More... | |
static bool | HandleLValueIndirectMember (EvalInfo &Info, const Expr *E, LValue &LVal, const IndirectFieldDecl *IFD) |
Update LVal to refer to the given indirect field. More... | |
static bool | HandleSizeof (EvalInfo &Info, SourceLocation Loc, QualType Type, CharUnits &Size) |
Get the size of the given type in char units. More... | |
static bool | HandleLValueArrayAdjustment (EvalInfo &Info, const Expr *E, LValue &LVal, QualType EltTy, int64_t Adjustment) |
Update a pointer value to model pointer arithmetic. More... | |
static bool | HandleLValueComplexElement (EvalInfo &Info, const Expr *E, LValue &LVal, QualType EltTy, bool Imag) |
Update an lvalue to refer to a component of a complex number. More... | |
static bool | evaluateVarDeclInit (EvalInfo &Info, const Expr *E, const VarDecl *VD, CallStackFrame *Frame, APValue *&Result) |
Try to evaluate the initializer for a variable declaration. More... | |
static bool | IsConstNonVolatile (QualType T) |
static unsigned | getBaseIndex (const CXXRecordDecl *Derived, const CXXRecordDecl *Base) |
Get the base index of the given base class within an APValue representing the given derived class. More... | |
static APSInt | extractStringLiteralCharacter (EvalInfo &Info, const Expr *Lit, uint64_t Index) |
Extract the value of a character from a string literal. More... | |
static void | expandStringLiteral (EvalInfo &Info, const Expr *Lit, APValue &Result) |
static void | expandArray (APValue &Array, unsigned Index) |
static bool | isReadByLvalueToRvalueConversion (QualType T) |
Determine whether a type would actually be read by an lvalue-to-rvalue conversion. More... | |
static bool | diagnoseUnreadableFields (EvalInfo &Info, const Expr *E, QualType T) |
Diagnose an attempt to read from any unreadable field within the specified type, which might be a class type. More... | |
template<typename SubobjectHandler > | |
SubobjectHandler::result_type | findSubobject (EvalInfo &Info, const Expr *E, const CompleteObject &Obj, const SubobjectDesignator &Sub, SubobjectHandler &handler) |
Find the designated sub-object of an rvalue. More... | |
static bool | extractSubobject (EvalInfo &Info, const Expr *E, const CompleteObject &Obj, const SubobjectDesignator &Sub, APValue &Result) |
Extract the designated sub-object of an rvalue. More... | |
static bool | modifySubobject (EvalInfo &Info, const Expr *E, const CompleteObject &Obj, const SubobjectDesignator &Sub, APValue &NewVal) |
Update the designated sub-object of an rvalue to the given value. More... | |
static unsigned | FindDesignatorMismatch (QualType ObjType, const SubobjectDesignator &A, const SubobjectDesignator &B, bool &WasArrayIndex) |
Find the position where two subobject designators diverge, or equivalently the length of the common initial subsequence. More... | |
static bool | AreElementsOfSameArray (QualType ObjType, const SubobjectDesignator &A, const SubobjectDesignator &B) |
Determine whether the given subobject designators refer to elements of the same array object. More... | |
static CompleteObject | findCompleteObject (EvalInfo &Info, const Expr *E, AccessKinds AK, const LValue &LVal, QualType LValType) |
Find the complete object to which an LValue refers. More... | |
static bool | handleLValueToRValueConversion (EvalInfo &Info, const Expr *Conv, QualType Type, const LValue &LVal, APValue &RVal) |
Perform an lvalue-to-rvalue conversion on the given glvalue. More... | |
static bool | handleAssignment (EvalInfo &Info, const Expr *E, const LValue &LVal, QualType LValType, APValue &Val) |
Perform an assignment of Val to LVal. Takes ownership of Val. More... | |
static bool | isOverflowingIntegerType (ASTContext &Ctx, QualType T) |
static bool | handleCompoundAssignment (EvalInfo &Info, const Expr *E, const LValue &LVal, QualType LValType, QualType PromotedLValType, BinaryOperatorKind Opcode, const APValue &RVal) |
Perform a compound assignment of LVal <op>= RVal. More... | |
static bool | handleIncDec (EvalInfo &Info, const Expr *E, const LValue &LVal, QualType LValType, bool IsIncrement, APValue *Old) |
Perform an increment or decrement on LVal. More... | |
static bool | EvaluateObjectArgument (EvalInfo &Info, const Expr *Object, LValue &This) |
Build an lvalue for the object argument of a member function call. More... | |
static const ValueDecl * | HandleMemberPointerAccess (EvalInfo &Info, QualType LVType, LValue &LV, const Expr *RHS, bool IncludeMember=true) |
HandleMemberPointerAccess - Evaluate a member access operation and build an lvalue referring to the result. More... | |
static const ValueDecl * | HandleMemberPointerAccess (EvalInfo &Info, const BinaryOperator *BO, LValue &LV, bool IncludeMember=true) |
static bool | HandleBaseToDerivedCast (EvalInfo &Info, const CastExpr *E, LValue &Result) |
HandleBaseToDerivedCast - Apply the given base-to-derived cast operation on the provided lvalue, which currently refers to the base object. More... | |
static bool | EvaluateDecl (EvalInfo &Info, const Decl *D) |
static bool | EvaluateCond (EvalInfo &Info, const VarDecl *CondDecl, const Expr *Cond, bool &Result) |
Evaluate a condition (either a variable declaration or an expression). More... | |
static EvalStmtResult | EvaluateStmt (StmtResult &Result, EvalInfo &Info, const Stmt *S, const SwitchCase *SC=nullptr) |
static EvalStmtResult | EvaluateLoopBody (StmtResult &Result, EvalInfo &Info, const Stmt *Body, const SwitchCase *Case=nullptr) |
Evaluate the body of a loop, and translate the result as appropriate. More... | |
static EvalStmtResult | EvaluateSwitch (StmtResult &Result, EvalInfo &Info, const SwitchStmt *SS) |
Evaluate a switch statement. More... | |
static bool | CheckTrivialDefaultConstructor (EvalInfo &Info, SourceLocation Loc, const CXXConstructorDecl *CD, bool IsValueInitialization) |
CheckTrivialDefaultConstructor - Check whether a constructor is a trivial default constructor. More... | |
static bool | CheckConstexprFunction (EvalInfo &Info, SourceLocation CallLoc, const FunctionDecl *Declaration, const FunctionDecl *Definition, const Stmt *Body) |
CheckConstexprFunction - Check that a function can be called in a constant expression. More... | |
static bool | hasFields (const CXXRecordDecl *RD) |
Determine if a class has any fields that might need to be copied by a trivial copy or move operation. More... | |
static bool | EvaluateArgs (ArrayRef< const Expr * > Args, ArgVector &ArgValues, EvalInfo &Info) |
EvaluateArgs - Evaluate the arguments to a function call. More... | |
static bool | HandleFunctionCall (SourceLocation CallLoc, const FunctionDecl *Callee, const LValue *This, ArrayRef< const Expr * > Args, const Stmt *Body, EvalInfo &Info, APValue &Result, const LValue *ResultSlot) |
Evaluate a function call. More... | |
static bool | HandleConstructorCall (const Expr *E, const LValue &This, APValue *ArgValues, const CXXConstructorDecl *Definition, EvalInfo &Info, APValue &Result) |
Evaluate a constructor call. More... | |
static bool | HandleConstructorCall (const Expr *E, const LValue &This, ArrayRef< const Expr * > Args, const CXXConstructorDecl *Definition, EvalInfo &Info, APValue &Result) |
static CharUnits | GetAlignOfType (EvalInfo &Info, QualType T) |
static CharUnits | GetAlignOfExpr (EvalInfo &Info, const Expr *E) |
static bool | HandleClassZeroInitialization (EvalInfo &Info, const Expr *E, const RecordDecl *RD, const LValue &This, APValue &Result) |
Perform zero-initialization on an object of non-union class type. More... | |
static bool | EvaluateRecord (const Expr *E, const LValue &This, APValue &Result, EvalInfo &Info) |
static bool | EvaluateVector (const Expr *E, APValue &Result, EvalInfo &Info) |
static bool | EvaluateArray (const Expr *E, const LValue &This, APValue &Result, EvalInfo &Info) |
static int | EvaluateBuiltinClassifyType (const CallExpr *E, const LangOptions &LangOpts) |
EvaluateBuiltinClassifyType - Evaluate __builtin_classify_type the same way as GCC. More... | |
template<typename LValue > | |
static bool | EvaluateBuiltinConstantPForLValue (const LValue &LV) |
EvaluateBuiltinConstantPForLValue - Determine the result of __builtin_constant_p when applied to the given lvalue. More... | |
static bool | EvaluateBuiltinConstantP (ASTContext &Ctx, const Expr *Arg) |
EvaluateBuiltinConstantP - Evaluate __builtin_constant_p as similarly to GCC as we can manage. More... | |
static QualType | getObjectType (APValue::LValueBase B) |
Retrieves the "underlying object type" of the given expression, as used by __builtin_object_size. More... | |
static const Expr * | ignorePointerCastsAndParens (const Expr *E) |
A more selective version of E->IgnoreParenCasts for TryEvaluateBuiltinObjectSize. More... | |
static bool | isDesignatorAtObjectEnd (const ASTContext &Ctx, const LValue &LVal) |
Checks to see if the given LValue's Designator is at the end of the LValue's record layout. More... | |
static bool | refersToCompleteObject (const LValue &LVal) |
Tests to see if the LValue has a designator (that isn't necessarily valid). More... | |
static bool | tryEvaluateBuiltinObjectSize (const Expr *E, unsigned Type, EvalInfo &Info, uint64_t &Size, bool *WasError=nullptr) |
Tries to evaluate the __builtin_object_size for E . More... | |
static bool | HasSameBase (const LValue &A, const LValue &B) |
static bool | isOnePastTheEndOfCompleteObject (const ASTContext &Ctx, const LValue &LV) |
Determine whether this is a pointer past the end of the complete object referred to by the lvalue. More... | |
static bool | TryEvaluateBuiltinNaN (const ASTContext &Context, QualType ResultTy, const Expr *Arg, bool SNaN, llvm::APFloat &Result) |
static bool | EvaluateVoid (const Expr *E, EvalInfo &Info) |
static bool | FastEvaluateAsRValue (const Expr *Exp, Expr::EvalResult &Result, const ASTContext &Ctx, bool &IsConst) |
static bool | hasUnacceptableSideEffect (Expr::EvalStatus &Result, Expr::SideEffectsKind SEK) |
static ICEDiag | NoDiag () |
static ICEDiag | Worst (ICEDiag A, ICEDiag B) |
static ICEDiag | CheckEvalInICE (const Expr *E, const ASTContext &Ctx) |
static ICEDiag | CheckICE (const Expr *E, const ASTContext &Ctx) |
static bool | EvaluateCPlusPlus11IntegralConstantExpr (const ASTContext &Ctx, const Expr *E, llvm::APSInt *Value, SourceLocation *Loc) |
Evaluate an expression as a C++11 integral constant expression. More... | |
#define ABSTRACT_STMT | ( | Node | ) |
#define BUILTIN_TYPE | ( | ID, | |
SINGLETON_ID | |||
) |
#define DEPENDENT_TYPE | ( | ID, | |
BASE | |||
) | case Type::ID: |
#define IMAGE_TYPE | ( | ImgType, | |
Id, | |||
SingletonId, | |||
Access, | |||
Suffix | |||
) | case BuiltinType::Id: |
#define NON_CANONICAL_TYPE | ( | ID, | |
BASE | |||
) | case Type::ID: |
#define NON_CANONICAL_UNLESS_DEPENDENT_TYPE | ( | ID, | |
BASE | |||
) | case Type::ID: |
#define PLACEHOLDER_TYPE | ( | ID, | |
SINGLETON_ID | |||
) | case BuiltinType::ID: break; |
#define STMT | ( | Node, | |
Base | |||
) | case Expr::Node##Class: |
#define TYPE | ( | ID, | |
BASE | |||
) |
enum AccessKinds |
Kinds of access we can perform on an object, for diagnostics.
Enumerator | |
---|---|
AK_Read | |
AK_Assign | |
AK_Increment | |
AK_Decrement |
Definition at line 2319 of file ExprConstant.cpp.
enum CheckSubobjectKind |
Definition at line 150 of file ExprConstant.cpp.
enum EvalStmtResult |
Definition at line 3372 of file ExprConstant.cpp.
enum ICEKind |
Definition at line 9290 of file ExprConstant.cpp.
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Determine whether the given subobject designators refer to elements of the same array object.
Definition at line 2651 of file ExprConstant.cpp.
References FindDesignatorMismatch().
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Cast an lvalue referring to a base subobject to a derived class, by truncating the lvalue's path to the given length.
Definition at line 1929 of file ExprConstant.cpp.
References clang::ASTRecordLayout::getBaseClassOffset(), clang::ASTRecordLayout::getVBaseClassOffset(), and I.
Referenced by HandleBaseToDerivedCast(), HandleLValueBase(), and HandleMemberPointerAccess().
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Check that this core constant expression value is a valid value for a constant expression.
If not, report an appropriate diagnostic. Does not check that the expression is of literal type.
Definition at line 1502 of file ExprConstant.cpp.
References clang::Type::castAs(), clang::Type::castAsArrayTypeUnsafe(), CheckLValueConstantExpression(), End, clang::RecordDecl::fields(), clang::APValue::getArrayFiller(), clang::APValue::getArrayInitializedElt(), clang::APValue::getArrayInitializedElts(), clang::Type::getAs(), clang::ArrayType::getElementType(), clang::APValue::getStructBase(), clang::APValue::getStructField(), clang::ValueDecl::getType(), clang::APValue::getUnionField(), clang::APValue::getUnionValue(), clang::APValue::hasArrayFiller(), I, clang::APValue::isArray(), clang::APValue::isLValue(), clang::APValue::isStruct(), clang::APValue::isUninit(), and clang::APValue::isUnion().
Referenced by clang::Expr::EvaluateAsInitializer(), and EvaluateAsRValue().
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CheckConstexprFunction - Check that a function can be called in a constant expression.
Definition at line 3840 of file ExprConstant.cpp.
References bool, clang::InheritedConstructor::getConstructor(), clang::CXXConstructorDecl::getInheritedConstructor(), and clang::FunctionDecl::isConstexpr().
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Perform the given integer operation, which is known to need at most BitWidth bits, and check for overflow in the original type (if that type was not an unsigned type).
Definition at line 1778 of file ExprConstant.cpp.
References clang::Expr::getExprLoc(), clang::Expr::getType(), and HandleOverflow().
Referenced by handleIntIntBinOp().
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Definition at line 9314 of file ExprConstant.cpp.
References clang::Expr::EvaluateAsRValue(), clang::Expr::EvalStatus::HasSideEffects, clang::APValue::isInt(), NoDiag(), and clang::Expr::EvalResult::Val.
Referenced by CheckICE().
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Definition at line 9323 of file ExprConstant.cpp.
References CheckEvalInICE(), clang::VarDecl::checkInitIsICE(), E, clang::Expr::EvaluateKnownConstInt(), clang::CallExpr::getBuiltinCallee(), clang::BinaryConditionalOperator::getCommon(), clang::ConditionalOperator::getCond(), clang::ConditionalOperator::getFalseExpr(), clang::BinaryConditionalOperator::getFalseExpr(), clang::ASTContext::getIntWidth(), clang::UnaryExprOrTypeTraitExpr::getKind(), clang::ASTContext::getLangOpts(), clang::BinaryOperator::getLHS(), clang::UnaryOperator::getOpcode(), clang::BinaryOperator::getOpcode(), clang::BinaryOperator::getRHS(), clang::UnaryOperator::getSubExpr(), clang::ConditionalOperator::getTrueExpr(), clang::Expr::getType(), clang::ValueDecl::getType(), clang::UnaryExprOrTypeTraitExpr::getTypeOfArgument(), clang::Expr::IgnoreParenCasts(), clang::Expr::IgnoreParenImpCasts(), IsConstNonVolatile(), clang::Type::isIntegralOrEnumerationType(), clang::Expr::isRValue(), clang::Type::isSignedIntegerOrEnumerationType(), clang::Expr::isValueDependent(), clang::Type::isVariableArrayType(), NoDiag(), clang::UETT_SizeOf, and Worst().
Referenced by clang::Expr::isCXX98IntegralConstantExpr(), and clang::Expr::isIntegerConstantExpr().
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Check that this core constant expression is of literal type, and if not, produce an appropriate diagnostic.
Definition at line 1478 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::isLiteralType(), and clang::Expr::isRValue().
Referenced by EvaluateAsRValue(), and EvaluateInPlace().
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Check that this reference or pointer core constant expression is a valid value for an address or reference constant expression.
Return true if we can fold this expression, whether or not it's a constant expression.
Definition at line 1400 of file ExprConstant.cpp.
References IsGlobalLValue(), clang::Type::isReferenceType(), and NoteLValueLocation().
Referenced by CheckConstantExpression(), and clang::Expr::EvaluateAsLValue().
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CheckTrivialDefaultConstructor - Check whether a constructor is a trivial default constructor.
If so, we'll fold it whether or not it's marked as constexpr. If it is marked as constexpr, we will never implicitly define it, so we need special handling.
Definition at line 3815 of file ExprConstant.cpp.
References clang::FunctionDecl::isConstexpr(), clang::CXXConstructorDecl::isDefaultConstructor(), and clang::FunctionDecl::isTrivial().
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Produce a string describing the given constexpr call.
Definition at line 1271 of file ExprConstant.cpp.
References E, clang::ValueDecl::getType(), I, and clang::APValue::printPretty().
Diagnose an attempt to read from any unreadable field within the specified type, which might be a class type.
Definition at line 2285 of file ExprConstant.cpp.
References clang::CXXRecordDecl::bases(), clang::RecordDecl::fields(), clang::Type::getAsCXXRecordDecl(), clang::Type::getBaseElementTypeUnsafe(), clang::Expr::getType(), clang::CXXRecordDecl::hasMutableFields(), isReadByLvalueToRvalueConversion(), and clang::TagDecl::isUnion().
Referenced by findSubobject().
Definition at line 1727 of file ExprConstant.cpp.
References clang::Type::castAs(), Evaluate(), clang::APValue::getFloat(), clang::APValue::getInt(), clang::Expr::getType(), clang::APValue::getVectorElt(), clang::APValue::getVectorLength(), clang::APValue::isFloat(), clang::APValue::isInt(), and clang::APValue::isVector().
Definition at line 1590 of file ExprConstant.cpp.
References clang::APValue::getLValueBase(), clang::APValue::getLValueOffset(), clang::ValueDecl::isWeak(), and clang::CharUnits::isZero().
Referenced by HandleConversionToBool().
Definition at line 8983 of file ExprConstant.cpp.
References AttributeLangSupport::C, EvaluateArray(), EvaluateAtomic(), EvaluateComplex(), EvaluateFloat(), EvaluateLValue(), EvaluateMemberPointer(), EvaluatePointer(), EvaluateRecord(), EvaluateVector(), EvaluateVoid(), clang::Expr::getType(), clang::Type::hasPointerRepresentation(), clang::Type::isAnyComplexType(), clang::Type::isArrayType(), clang::Type::isAtomicType(), clang::Type::isFunctionType(), clang::Expr::isGLValue(), clang::Type::isIntegralOrEnumerationType(), clang::Type::isMemberPointerType(), clang::Type::isRealFloatingType(), clang::Type::isRecordType(), clang::Type::isVectorType(), clang::Type::isVoidType(), and P.
Referenced by EvalAndBitcastToAPInt(), EvaluateArgs(), EvaluateAsBooleanCondition(), EvaluateAsRValue(), EvaluateIgnoredValue(), EvaluateInPlace(), EvaluateStmt(), clang::Expr::EvaluateWithSubstitution(), handleLValueToRValueConversion(), and clang::Expr::isPotentialConstantExprUnevaluated().
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EvaluateArgs - Evaluate the arguments to a function call.
Definition at line 3909 of file ExprConstant.cpp.
References E, Evaluate(), and I.
Referenced by HandleConstructorCall(), HandleFunctionCall(), and clang::Expr::isPotentialConstantExprUnevaluated().
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Definition at line 6040 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::isArrayType(), and clang::Expr::isRValue().
Referenced by Evaluate(), and EvaluateInPlace().
Definition at line 1639 of file ExprConstant.cpp.
References Evaluate(), HandleConversionToBool(), and clang::Expr::isRValue().
Referenced by EvaluateCond(), and EvaluateStmt().
EvaluateAsRValue - Try to evaluate this expression, performing an implicit lvalue-to-rvalue cast if it is an lvalue.
Definition at line 9078 of file ExprConstant.cpp.
References CheckConstantExpression(), CheckLiteralType(), Evaluate(), clang::Expr::getExprLoc(), clang::Expr::getType(), handleLValueToRValueConversion(), clang::Expr::isGLValue(), and clang::QualType::isNull().
Referenced by clang::Expr::EvaluateAsRValue(), and tryEvaluateBuiltinObjectSize().
Definition at line 8933 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::isAtomicType(), and clang::Expr::isRValue().
Referenced by Evaluate().
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EvaluateBuiltinClassifyType - Evaluate __builtin_classify_type the same way as GCC.
Definition at line 6356 of file ExprConstant.cpp.
References clang::CallExpr::getArg(), clang::Type::getAs(), clang::QualType::getCanonicalType(), clang::BuiltinType::getKind(), clang::CallExpr::getNumArgs(), clang::Expr::getType(), clang::Type::getTypeClass(), clang::Type::isMemberDataPointerType(), clang::Type::isMemberFunctionPointerType(), clang::TTK_Class, clang::TTK_Enum, clang::TTK_Interface, clang::TTK_Struct, and clang::TTK_Union.
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EvaluateBuiltinConstantP - Evaluate __builtin_constant_p as similarly to GCC as we can manage.
Definition at line 6509 of file ExprConstant.cpp.
References clang::Expr::EvaluateAsRValue(), EvaluateBuiltinConstantPForLValue(), EvaluateLValue(), EvaluatePointer(), clang::APValue::getKind(), clang::Expr::getType(), clang::Expr::EvalStatus::HasSideEffects, clang::Type::isAnyComplexType(), clang::Expr::isEvaluatable(), clang::Type::isFloatingType(), clang::Expr::isGLValue(), clang::Type::isIntegralOrEnumerationType(), clang::Type::isPointerType(), and clang::Expr::EvalResult::Val.
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EvaluateBuiltinConstantPForLValue - Determine the result of __builtin_constant_p when applied to the given lvalue.
An lvalue is only "constant" if it is a pointer or reference to the first character of a string literal.
Definition at line 6502 of file ExprConstant.cpp.
References E.
Referenced by EvaluateBuiltinConstantP().
Definition at line 8439 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::isAnyComplexType(), and clang::Expr::isRValue().
Referenced by Evaluate().
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Evaluate a condition (either a variable declaration or an expression).
Definition at line 3421 of file ExprConstant.cpp.
References EvaluateAsBooleanCondition(), and EvaluateDecl().
Referenced by EvaluateStmt().
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Evaluate an expression as a C++11 integral constant expression.
Definition at line 9704 of file ExprConstant.cpp.
References clang::Expr::getExprLoc(), clang::APValue::getInt(), clang::Expr::getType(), clang::Expr::isCXX11ConstantExpr(), clang::APValue::isInt(), clang::Type::isIntegralOrEnumerationType(), and clang::Result.
Referenced by clang::Expr::isIntegerConstantExpr().
Definition at line 3388 of file ExprConstant.cpp.
References EvaluateInPlace(), and clang::Expr::isValueDependent().
Referenced by EvaluateCond(), EvaluateStmt(), and EvaluateSwitch().
Definition at line 8214 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::isRealFloatingType(), and clang::Expr::isRValue().
Referenced by Evaluate().
Evaluate an expression to see if it had side-effects, and discard its result.
true
if the caller should keep evaluating. Definition at line 1309 of file ExprConstant.cpp.
References Evaluate().
Referenced by EvaluateStmt().
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EvaluateInPlace - Evaluate an expression in-place in an APValue.
In some cases, the in-place evaluation is essential, since later initializers for an object can indirectly refer to subobjects which were initialized earlier.
Definition at line 9056 of file ExprConstant.cpp.
References CheckLiteralType(), Evaluate(), EvaluateArray(), EvaluateRecord(), clang::Expr::getType(), clang::Type::isArrayType(), clang::Type::isRecordType(), clang::Expr::isRValue(), and clang::Expr::isValueDependent().
Referenced by clang::Expr::EvaluateAsInitializer(), EvaluateDecl(), EvaluateStmt(), HandleClassZeroInitialization(), and HandleConstructorCall().
Definition at line 6313 of file ExprConstant.cpp.
References EvaluateIntegerOrLValue(), clang::APValue::getInt(), and clang::APValue::isInt().
Referenced by EvaluateSwitch().
EvaluateIntegerOrLValue - Evaluate an rvalue integral-typed expression, and produce either the integer value or a pointer.
GCC has a heinous extension which folds casts between pointer types and pointer-sized integral types. We support this by allowing the evaluation of an integer rvalue to produce a pointer (represented as an lvalue) instead. Some simple arithmetic on such values is supported (they are treated much like char*).
Definition at line 6307 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::isIntegralOrEnumerationType(), and clang::Expr::isRValue().
Referenced by EvaluateInteger().
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Evaluate the body of a loop, and translate the result as appropriate.
Definition at line 3445 of file ExprConstant.cpp.
References EvaluateStmt().
Referenced by EvaluateStmt().
Evaluate an expression as an lvalue.
This can be legitimately called on expressions which are not glvalues, in three cases:
Definition at line 4762 of file ExprConstant.cpp.
References E, clang::Expr::getType(), clang::Type::isFunctionType(), clang::Expr::isGLValue(), and clang::Type::isVoidType().
Referenced by Evaluate(), clang::Expr::EvaluateAsLValue(), EvaluateBuiltinConstantP(), and EvaluateObjectArgument().
Definition at line 5333 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::isMemberPointerType(), and clang::Expr::isRValue().
Referenced by Evaluate(), and HandleMemberPointerAccess().
Build an lvalue for the object argument of a member function call.
Definition at line 3207 of file ExprConstant.cpp.
References EvaluateLValue(), EvaluatePointer(), EvaluateTemporary(), clang::Expr::getType(), clang::Expr::isGLValue(), clang::Type::isLiteralType(), and clang::Type::isPointerType().
Referenced by HandleMemberPointerAccess().
Definition at line 5059 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::hasPointerRepresentation(), and clang::Expr::isRValue().
Referenced by Evaluate(), EvaluateBuiltinConstantP(), EvaluateObjectArgument(), and tryEvaluateBuiltinObjectSize().
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Definition at line 5752 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::isRecordType(), and clang::Expr::isRValue().
Referenced by Evaluate(), and EvaluateInPlace().
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Definition at line 3526 of file ExprConstant.cpp.
References clang::CompoundStmt::body(), clang::DeclStmt::decls(), Evaluate(), EvaluateAsBooleanCondition(), EvaluateCond(), EvaluateDecl(), EvaluateIgnoredValue(), EvaluateInPlace(), EvaluateLoopBody(), EvaluateSwitch(), clang::CXXForRangeStmt::getBeginStmt(), clang::CXXForRangeStmt::getBody(), clang::WhileStmt::getBody(), clang::DoStmt::getBody(), clang::ForStmt::getBody(), clang::CXXForRangeStmt::getCond(), clang::IfStmt::getCond(), clang::WhileStmt::getCond(), clang::DoStmt::getCond(), clang::ForStmt::getCond(), clang::IfStmt::getConditionVariable(), clang::WhileStmt::getConditionVariable(), clang::ForStmt::getConditionVariable(), clang::IfStmt::getElse(), clang::CXXForRangeStmt::getEndStmt(), clang::CXXForRangeStmt::getInc(), clang::ForStmt::getInc(), clang::IfStmt::getInit(), clang::ForStmt::getInit(), clang::CXXForRangeStmt::getLoopVarStmt(), clang::CXXForRangeStmt::getRangeStmt(), clang::IfStmt::getThen(), and S.
Referenced by EvaluateLoopBody(), EvaluateSwitch(), HandleConstructorCall(), and HandleFunctionCall().
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Evaluate a switch statement.
Definition at line 3464 of file ExprConstant.cpp.
References EvaluateDecl(), EvaluateInteger(), clang::Expr::EvaluateKnownConstInt(), EvaluateStmt(), clang::SwitchStmt::getBody(), clang::SwitchStmt::getCond(), clang::SwitchStmt::getConditionVariable(), clang::SwitchStmt::getInit(), clang::CaseStmt::getLHS(), clang::SwitchCase::getLocStart(), clang::SwitchCase::getNextSwitchCase(), clang::CaseStmt::getRHS(), and clang::SwitchStmt::getSwitchCaseList().
Referenced by EvaluateStmt().
Evaluate an expression of record type as a temporary.
Definition at line 5805 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::isRecordType(), and clang::Expr::isRValue().
Referenced by EvaluateObjectArgument().
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Try to evaluate the initializer for a variable declaration.
Info | Information about the ongoing evaluation. |
E | An expression to be used when printing diagnostics. |
VD | The variable whose initializer should be obtained. |
Frame | The frame in which the variable was created. Must be null if this variable is not local to the evaluation. |
Result | Filled in with a pointer to the value of the variable. |
Definition at line 2107 of file ExprConstant.cpp.
References clang::VarDecl::checkInitIsICE(), clang::VarDecl::evaluateValue(), clang::VarDecl::getAnyInitializer(), clang::VarDecl::getEvaluatedValue(), clang::Expr::isValueDependent(), and clang::ValueDecl::isWeak().
Referenced by findCompleteObject().
Definition at line 5847 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Expr::isRValue(), and clang::Type::isVectorType().
Referenced by Evaluate().
Definition at line 8974 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Expr::isRValue(), and clang::Type::isVoidType().
Referenced by Evaluate().
Definition at line 2240 of file ExprConstant.cpp.
References clang::APValue::getArrayFiller(), clang::APValue::getArrayInitializedElt(), clang::APValue::getArrayInitializedElts(), clang::APValue::getArraySize(), clang::APValue::hasArrayFiller(), I, max(), min(), and clang::APValue::swap().
Referenced by findSubobject().
Definition at line 2217 of file ExprConstant.cpp.
References clang::APValue::getArrayFiller(), clang::APValue::getArrayInitializedElt(), clang::APValue::getArrayInitializedElts(), clang::StringLiteral::getCharByteWidth(), clang::StringLiteral::getCodeUnit(), clang::StringLiteral::getLength(), clang::Expr::getType(), clang::APValue::hasArrayFiller(), I, clang::Type::isIntegerType(), clang::Type::isUnsignedIntegerType(), and min().
Referenced by findSubobject().
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Extract the value of a character from a string literal.
Definition at line 2197 of file ExprConstant.cpp.
References clang::StringLiteral::getCharByteWidth(), clang::StringLiteral::getCodeUnit(), clang::Expr::getType(), clang::Type::isIntegerType(), and clang::Type::isUnsignedIntegerType().
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Extract the designated sub-object of an rvalue.
Definition at line 2545 of file ExprConstant.cpp.
References findSubobject().
Referenced by handleLValueToRValueConversion().
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Definition at line 9099 of file ExprConstant.cpp.
References clang::ASTContext::getLangOpts(), clang::Expr::getType(), clang::Type::isArrayType(), clang::QualType::isNull(), clang::Type::isRecordType(), clang::Expr::isRValue(), and clang::Expr::EvalResult::Val.
Referenced by clang::Expr::EvaluateAsRValue(), and clang::Expr::EvaluateForOverflow().
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Find the complete object to which an LValue refers.
Definition at line 2671 of file ExprConstant.cpp.
References AK_Read, evaluateVarDeclInit(), clang::QualType::getAddressSpace(), clang::VarDecl::getDefinition(), clang::Expr::getExprLoc(), clang::ValueDecl::getType(), clang::VarDecl::hasDefinition(), clang::VarDecl::isConstexpr(), clang::QualType::isConstQualified(), clang::Type::isFloatingType(), clang::Type::isIntegralOrEnumerationType(), clang::QualType::isVolatileQualified(), NoteLValueLocation(), clang::LangAS::opencl_constant, clang::QualType::removeLocalConst(), and clang::SD_Static.
Referenced by handleAssignment(), handleCompoundAssignment(), handleIncDec(), and handleLValueToRValueConversion().
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Find the position where two subobject designators diverge, or equivalently the length of the common initial subsequence.
Definition at line 2615 of file ExprConstant.cpp.
References clang::Type::castAs(), clang::Type::castAsArrayTypeUnsafe(), clang::ComplexType::getElementType(), clang::ArrayType::getElementType(), I, clang::Type::isAnyComplexType(), clang::Type::isArrayType(), clang::QualType::isNull(), and min().
Referenced by AreElementsOfSameArray().
SubobjectHandler::result_type findSubobject | ( | EvalInfo & | Info, |
const Expr * | E, | ||
const CompleteObject & | Obj, | ||
const SubobjectDesignator & | Sub, | ||
SubobjectHandler & | handler | ||
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Find the designated sub-object of an rvalue.
Definition at line 2348 of file ExprConstant.cpp.
References clang::QualType::addConst(), AK_Read, clang::Type::castAs(), diagnoseUnreadableFields(), expandArray(), expandStringLiteral(), clang::APValue::getArrayFiller(), clang::APValue::getArrayInitializedElt(), clang::APValue::getArrayInitializedElts(), clang::Type::getAsCXXRecordDecl(), getBaseIndex(), clang::FieldDecl::getCanonicalDecl(), clang::APValue::getComplexFloatImag(), clang::APValue::getComplexFloatReal(), clang::APValue::getComplexIntImag(), clang::APValue::getComplexIntReal(), clang::ArrayType::getElementType(), clang::APValue::getLValueBase(), clang::APValue::getLValuePath(), clang::ConstantArrayType::getSize(), clang::APValue::getStructBase(), clang::APValue::getStructField(), clang::APValue::getUnionField(), clang::APValue::getUnionValue(), clang::APValue::hasLValuePath(), I, clang::Type::isAnyComplexType(), clang::Type::isArrayType(), clang::FieldDecl::isBitField(), clang::APValue::isComplexFloat(), clang::APValue::isComplexInt(), clang::QualType::isConstQualified(), clang::APValue::isLValue(), clang::Type::isRecordType(), clang::APValue::isUninit(), clang::TagDecl::isUnion(), clang::QualType::isVolatileQualified(), and truncateBitfieldValue().
Referenced by extractSubobject(), handleCompoundAssignment(), handleIncDec(), and modifySubobject().
Definition at line 5205 of file ExprConstant.cpp.
References GetAlignOfType(), clang::Expr::getType(), and clang::Expr::IgnoreParens().
Definition at line 5193 of file ExprConstant.cpp.
References clang::Type::getAs(), clang::Type::getPointeeType(), and clang::QualType::getTypePtr().
Referenced by GetAlignOfExpr().
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Get the base index of the given base class within an APValue representing the given derived class.
Definition at line 2183 of file ExprConstant.cpp.
References clang::CXXRecordDecl::bases_begin(), clang::CXXRecordDecl::bases_end(), E, clang::CXXRecordDecl::getCanonicalDecl(), and I.
Referenced by findSubobject().
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Sign- or zero-extend a value to 64 bits.
If it's already 64 bits, just return its existing value.
Definition at line 1319 of file ExprConstant.cpp.
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Definition at line 1563 of file ExprConstant.cpp.
Referenced by HasSameBase(), IsWeakLValue(), and isZeroSized().
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Retrieves the "underlying object type" of the given expression, as used by __builtin_object_size.
Definition at line 6553 of file ExprConstant.cpp.
References clang::Expr::getType(), and clang::ValueDecl::getType().
Referenced by clang::Sema::checkInitMethod(), clang::ObjCObjectPointerType::getInterfaceDecl(), clang::ObjCObjectPointerType::getNumProtocols(), clang::ObjCObjectPointerType::getProtocol(), clang::ObjCObjectPointerType::getTypeArgs(), clang::ObjCObjectPointerType::getTypeArgsAsWritten(), clang::ObjCObjectPointerType::isKindOfType(), clang::ObjCObjectPointerType::isObjCClassType(), clang::ObjCObjectPointerType::isObjCIdOrClassType(), clang::ObjCObjectPointerType::isObjCIdType(), clang::ObjCObjectPointerType::isObjCQualifiedClassType(), clang::ObjCObjectPointerType::isObjCQualifiedIdType(), clang::ObjCObjectPointerType::isSpecialized(), clang::ObjCObjectPointerType::isSpecializedAsWritten(), clang::ObjCObjectPointerType::isUnspecialized(), clang::ObjCObjectPointerType::qual_begin(), clang::ObjCObjectPointerType::qual_empty(), clang::ObjCObjectPointerType::qual_end(), and tryEvaluateBuiltinObjectSize().
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Perform an assignment of Val to LVal. Takes ownership of Val.
Definition at line 2920 of file ExprConstant.cpp.
References AK_Assign, findCompleteObject(), and modifySubobject().
Referenced by HandleFunctionCall().
HandleBaseToDerivedCast - Apply the given base-to-derived cast operation on the provided lvalue, which currently refers to the base object.
Definition at line 3335 of file ExprConstant.cpp.
References CastToDerivedClass(), clang::Type::getAs(), clang::Type::getAsCXXRecordDecl(), clang::CXXRecordDecl::getCanonicalDecl(), clang::Type::getPointeeType(), clang::Expr::getType(), and clang::CastExpr::path_size().
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Perform zero-initialization on an object of non-union class type.
C++11 [dcl.init]p5: To zero-initialize an object or reference of type T means: [...] – if T is a (possibly cv-qualified) non-union class type, each non-static data member and each base-class subobject is zero-initialized
Definition at line 5434 of file ExprConstant.cpp.
References distance(), End, EvaluateInPlace(), clang::RecordDecl::field_begin(), clang::RecordDecl::field_end(), clang::RecordDecl::fields(), HandleLValueDirectBase(), HandleLValueMember(), I, and clang::TagDecl::isUnion().
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Perform a compound assignment of LVal <op>= RVal.
Definition at line 3039 of file ExprConstant.cpp.
References AK_Assign, E, findCompleteObject(), and findSubobject().
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Evaluate a constructor call.
Definition at line 3976 of file ExprConstant.cpp.
References clang::CXXRecordDecl::bases_begin(), AttributeLangSupport::C, distance(), EvaluateInPlace(), EvaluateStmt(), clang::RecordDecl::field_begin(), clang::RecordDecl::field_end(), clang::FunctionDecl::getBody(), clang::Expr::getExprLoc(), clang::FieldDecl::getFieldIndex(), clang::QualType::getNonReferenceType(), clang::CXXRecordDecl::getNumBases(), clang::CXXRecordDecl::getNumVBases(), clang::FunctionDecl::getParamDecl(), clang::CXXMethodDecl::getParent(), clang::FieldDecl::getParent(), clang::APValue::getStructBase(), clang::APValue::getStructField(), clang::CXXBaseSpecifier::getType(), clang::ValueDecl::getType(), clang::APValue::getUnionField(), clang::APValue::getUnionValue(), HandleLValueDirectBase(), HandleLValueMember(), handleLValueToRValueConversion(), hasFields(), clang::CXXConstructorDecl::init_begin(), clang::CXXConstructorDecl::inits(), clang::FieldDecl::isBitField(), clang::CXXConstructorDecl::isCopyOrMoveConstructor(), clang::FunctionDecl::isDefaulted(), clang::CXXConstructorDecl::isDelegatingConstructor(), clang::FunctionDecl::isTrivial(), clang::APValue::isUninit(), clang::APValue::isUnion(), clang::TagDecl::isUnion(), clang::CXXBaseSpecifier::isVirtual(), and truncateBitfieldValue().
Referenced by HandleConstructorCall(), and clang::Expr::isPotentialConstantExpr().
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Definition at line 4117 of file ExprConstant.cpp.
References EvaluateArgs(), and HandleConstructorCall().
Definition at line 1605 of file ExprConstant.cpp.
References EvalPointerValueAsBool(), clang::APValue::getComplexFloatImag(), clang::APValue::getComplexFloatReal(), clang::APValue::getComplexIntImag(), clang::APValue::getComplexIntReal(), clang::APValue::getFloat(), clang::APValue::getInt(), clang::APValue::getKind(), clang::APValue::getMemberPointerDecl(), and Uninitialized.
Referenced by clang::Expr::EvaluateAsBooleanCondition(), and EvaluateAsBooleanCondition().
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Perform the given binary floating-point operation, in-place, on LHS.
Definition at line 1899 of file ExprConstant.cpp.
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Definition at line 1671 of file ExprConstant.cpp.
References HandleOverflow().
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Definition at line 1656 of file ExprConstant.cpp.
References HandleOverflow(), and clang::Type::isSignedIntegerOrEnumerationType().
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Evaluate a function call.
Definition at line 3926 of file ExprConstant.cpp.
References EvaluateArgs(), EvaluateStmt(), clang::FunctionDecl::getReturnType(), handleAssignment(), handleLValueToRValueConversion(), hasFields(), and clang::Type::isVoidType().
Referenced by clang::Expr::isPotentialConstantExpr().
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Perform an increment or decrement on LVal.
Definition at line 3190 of file ExprConstant.cpp.
References AK_Decrement, AK_Increment, E, findCompleteObject(), and findSubobject().
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Perform the given binary integer operation.
Definition at line 1801 of file ExprConstant.cpp.
References CheckedIntArithmetic(), clang::Expr::getType(), and HandleOverflow().
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Definition at line 1695 of file ExprConstant.cpp.
References HandleOverflow().
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Definition at line 1683 of file ExprConstant.cpp.
References clang::Type::isUnsignedIntegerOrEnumerationType().
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Update a pointer value to model pointer arithmetic.
Info | - Information about the ongoing evaluation. |
E | - The expression being evaluated, for diagnostic purposes. |
LVal | - The pointer value to be updated. |
EltTy | - The pointee type represented by LVal. |
Adjustment | - The adjustment, in objects of type EltTy, to add. |
Definition at line 2068 of file ExprConstant.cpp.
References clang::Expr::getExprLoc(), and HandleSizeof().
Referenced by tryEvaluateBuiltinObjectSize().
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Definition at line 1972 of file ExprConstant.cpp.
References CastToDerivedClass(), clang::Type::getAsCXXRecordDecl(), clang::CXXBaseSpecifier::getType(), clang::ASTRecordLayout::getVBaseClassOffset(), HandleLValueDirectBase(), and clang::CXXBaseSpecifier::isVirtual().
Referenced by HandleLValueBasePath().
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Definition at line 1997 of file ExprConstant.cpp.
References clang::Type::getAsCXXRecordDecl(), HandleLValueBase(), clang::CastExpr::path_begin(), and clang::CastExpr::path_end().
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Update an lvalue to refer to a component of a complex number.
Info | - Information about the ongoing evaluation. |
LVal | - The lvalue to be updated. |
EltTy | - The complex number's component type. |
Imag | - False for the real component, true for the imaginary. |
Definition at line 2086 of file ExprConstant.cpp.
References clang::Expr::getExprLoc(), and HandleSizeof().
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Definition at line 1958 of file ExprConstant.cpp.
Referenced by HandleClassZeroInitialization(), HandleConstructorCall(), HandleLValueBase(), and HandleMemberPointerAccess().
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Update LVal to refer to the given indirect field.
Definition at line 2027 of file ExprConstant.cpp.
References AttributeLangSupport::C, clang::IndirectFieldDecl::chain(), and HandleLValueMember().
Referenced by HandleMemberPointerAccess().
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Update LVal to refer to the given field, which must be a member of the type currently described by LVal.
Definition at line 2012 of file ExprConstant.cpp.
References clang::FieldDecl::getFieldIndex(), and clang::FieldDecl::getParent().
Referenced by HandleClassZeroInitialization(), HandleConstructorCall(), HandleLValueIndirectMember(), and HandleMemberPointerAccess().
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Perform an lvalue-to-rvalue conversion on the given glvalue.
This can also be used for 'lvalue-to-lvalue' conversions for looking up the glvalue referred to by an entity of reference type.
Info | - Information about the ongoing evaluation. |
Conv | - The expression for which we are performing the conversion. Used for diagnostics. |
Type | - The type of the glvalue (before stripping cv-qualifiers in the case of a non-class type). |
LVal | - The glvalue on which we are attempting to perform this action. |
RVal | - The produced value will be placed here. |
Definition at line 2882 of file ExprConstant.cpp.
References AK_Read, Evaluate(), extractSubobject(), findCompleteObject(), clang::Expr::getType(), and clang::QualType::isVolatileQualified().
Referenced by EvaluateAsRValue(), HandleConstructorCall(), and HandleFunctionCall().
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HandleMemberPointerAccess - Evaluate a member access operation and build an lvalue referring to the result.
Info | - Information about the ongoing evaluation. |
LV | - An lvalue referring to the base of the member pointer. |
RHS | - The member pointer expression. |
IncludeMember | - Specifies whether the member itself is included in the resulting LValue subobject designator. This is not possible when creating a bound member function. |
Definition at line 3233 of file ExprConstant.cpp.
References CastToDerivedClass(), EvaluateMemberPointer(), clang::Type::getAs(), clang::Type::getAsCXXRecordDecl(), clang::CXXRecordDecl::getCanonicalDecl(), clang::Type::getPointeeType(), HandleLValueDirectBase(), HandleLValueIndirectMember(), HandleLValueMember(), and I.
Referenced by HandleMemberPointerAccess().
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Definition at line 3315 of file ExprConstant.cpp.
References EvaluateMemberPointer(), EvaluateObjectArgument(), clang::BinaryOperator::getLHS(), clang::BinaryOperator::getOpcode(), clang::BinaryOperator::getRHS(), clang::Expr::getType(), and HandleMemberPointerAccess().
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Definition at line 1649 of file ExprConstant.cpp.
Referenced by CheckedIntArithmetic(), HandleFloatToFloatCast(), HandleFloatToIntCast(), handleIntIntBinOp(), and HandleIntToFloatCast().
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Get the size of the given type in char units.
Definition at line 2037 of file ExprConstant.cpp.
References clang::Type::isConstantSizeType(), clang::Type::isDependentType(), clang::Type::isFunctionType(), and clang::Type::isVoidType().
Referenced by HandleLValueArrayAdjustment(), and HandleLValueComplexElement().
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Determine if a class has any fields that might need to be copied by a trivial copy or move operation.
Definition at line 3890 of file ExprConstant.cpp.
References clang::CXXRecordDecl::bases(), clang::RecordDecl::fields(), and clang::CXXRecordDecl::isEmpty().
Referenced by HandleConstructorCall(), and HandleFunctionCall().
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Definition at line 7089 of file ExprConstant.cpp.
References GetLValueBaseDecl(), and IsGlobalLValue().
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Definition at line 9150 of file ExprConstant.cpp.
References clang::Expr::EvalStatus::HasSideEffects, clang::Expr::EvalStatus::HasUndefinedBehavior, clang::Expr::SE_AllowSideEffects, and clang::Expr::SE_AllowUndefinedBehavior.
Referenced by clang::Expr::EvaluateAsFloat(), clang::Expr::EvaluateAsInt(), and clang::Expr::isEvaluatable().
A more selective version of E->IgnoreParenCasts for TryEvaluateBuiltinObjectSize.
This ignores some casts/parens that serve only to change the type of E. Ex. For E = (short*)((char*)(&foo))
, returns &foo
Always returns an RValue with a pointer representation.
Definition at line 6571 of file ExprConstant.cpp.
References clang::CastExpr::getCastKind(), clang::Expr::getType(), clang::Type::hasPointerRepresentation(), clang::Expr::IgnoreParens(), and clang::Expr::isRValue().
Referenced by tryEvaluateBuiltinObjectSize().
Definition at line 2176 of file ExprConstant.cpp.
References clang::QualType::getQualifiers(), clang::Qualifiers::hasConst(), and clang::Qualifiers::hasVolatile().
Referenced by CheckICE().
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Checks to see if the given LValue's Designator is at the end of the LValue's record layout.
e.g. struct { struct { int a, b; } fst, snd; } obj; obj.fst // no obj.snd // yes obj.fst.a // no obj.fst.b // no obj.snd.a // no obj.snd.b // yes
Please note: this function is specialized for how __builtin_object_size views "objects".
If this encounters an invalid RecordDecl, it will always return true.
Definition at line 6606 of file ExprConstant.cpp.
References clang::Type::castAs(), E, clang::ASTContext::getAsArrayType(), clang::ASTContext::getASTRecordLayout(), clang::ComplexType::getElementType(), clang::ArrayType::getElementType(), clang::ASTRecordLayout::getFieldCount(), clang::FieldDecl::getFieldIndex(), clang::FieldDecl::getParent(), clang::ConstantArrayType::getSize(), clang::ValueDecl::getType(), I, clang::Type::isAnyComplexType(), clang::Type::isArrayType(), and clang::TagDecl::isUnion().
Referenced by tryEvaluateBuiltinObjectSize().
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Definition at line 1331 of file ExprConstant.cpp.
References E, clang::CompoundLiteralExpr::isFileScope(), clang::Expr::isLValue(), IsStringLiteralCall(), and clang::SD_Static.
Referenced by CheckLValueConstantExpression(), HasSameBase(), and clang::Expr::EvalResult::isGlobalLValue().
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Definition at line 1567 of file ExprConstant.cpp.
References E.
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Determine whether this is a pointer past the end of the complete object referred to by the lvalue.
Definition at line 7111 of file ExprConstant.cpp.
References clang::ASTContext::getTypeSizeInChars(), and clang::Type::isIncompleteType().
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Definition at line 2934 of file ExprConstant.cpp.
References clang::ASTContext::getIntWidth(), clang::ASTContext::IntTy, and clang::Type::isSignedIntegerType().
Determine whether a type would actually be read by an lvalue-to-rvalue conversion.
If it's of class type, we may assume that the copy operation is trivial. Note that this is never true for a union type with fields (because the copy always "reads" the active member) and always true for a non-class type.
Definition at line 2265 of file ExprConstant.cpp.
References clang::CXXRecordDecl::bases(), clang::RecordDecl::field_empty(), clang::RecordDecl::fields(), clang::Type::getAsCXXRecordDecl(), clang::Type::getBaseElementTypeUnsafe(), clang::CXXRecordDecl::isEmpty(), and clang::TagDecl::isUnion().
Referenced by diagnoseUnreadableFields().
Should this call expression be treated as a string literal?
Definition at line 1325 of file ExprConstant.cpp.
References clang::CallExpr::getBuiltinCallee().
Referenced by IsGlobalLValue().
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Definition at line 1574 of file ExprConstant.cpp.
References GetLValueBaseDecl(), and clang::ValueDecl::isWeak().
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Definition at line 1579 of file ExprConstant.cpp.
References GetLValueBaseDecl(), clang::ValueDecl::getType(), clang::Type::isArrayType(), and clang::Type::isIncompleteType().
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Update the designated sub-object of an rvalue to the given value.
Definition at line 2605 of file ExprConstant.cpp.
References findSubobject().
Referenced by handleAssignment().
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Definition at line 9310 of file ExprConstant.cpp.
Referenced by CheckEvalInICE(), and CheckICE().
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Definition at line 1387 of file ExprConstant.cpp.
References clang::Expr::getExprLoc().
Referenced by CheckLValueConstantExpression(), and findCompleteObject().
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Tests to see if the LValue has a designator (that isn't necessarily valid).
Definition at line 6666 of file ExprConstant.cpp.
Referenced by tryEvaluateBuiltinObjectSize().
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Definition at line 1706 of file ExprConstant.cpp.
References clang::FieldDecl::getBitWidthValue(), clang::APValue::getInt(), clang::FieldDecl::isBitField(), clang::APValue::isInt(), and clang::APValue::isLValue().
Referenced by findSubobject(), and HandleConstructorCall().
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Definition at line 8219 of file ExprConstant.cpp.
References clang::ASTContext::getFloatTypeSemantics(), clang::StringLiteral::getString(), clang::ASTContext::getTargetInfo(), clang::Expr::IgnoreParenCasts(), and clang::TargetInfo::isNan2008().
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Tries to evaluate the __builtin_object_size for E
.
If successful, returns true and stores the result in Size
.
If WasError
is non-null, this will report whether the failure to evaluate is to be treated as an Error in IntExprEvaluator.
Definition at line 6684 of file ExprConstant.cpp.
References E, End, clang::serialized_diags::Error, EvaluateAsRValue(), EvaluatePointer(), getObjectType(), HandleLValueArrayAdjustment(), ignorePointerCastsAndParens(), isDesignatorAtObjectEnd(), clang::Type::isFunctionType(), clang::Expr::isGLValue(), clang::Type::isIncompleteType(), clang::CharUnits::isNegative(), clang::QualType::isNull(), refersToCompleteObject(), and S.
Referenced by clang::Expr::tryEvaluateObjectSize().
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Definition at line 9312 of file ExprConstant.cpp.
Referenced by CheckICE().