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https://github.com/capstone-engine/llvm-capstone.git
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constexpr: Remove APValue/CCValue distinction. It is no longer useful given the
resolution of core issue 1454. llvm-svn: 151991
This commit is contained in:
Richard Smith
parent
15ceed9a9e
commit
2e312c8738
@ -265,64 +265,6 @@ namespace {
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}
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};
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/// A core constant value. This can be the value of any constant expression,
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/// or a pointer or reference to a non-static object or function parameter.
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///
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/// For an LValue, the base and offset are stored in the APValue subobject,
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/// but the other information is stored in the SubobjectDesignator. For all
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/// other value kinds, the value is stored directly in the APValue subobject.
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class CCValue : public APValue {
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typedef llvm::APSInt APSInt;
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typedef llvm::APFloat APFloat;
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/// If the value is a reference or pointer, this is a description of how the
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/// subobject was specified.
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SubobjectDesignator Designator;
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public:
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struct GlobalValue {};
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CCValue() {}
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explicit CCValue(const APSInt &I) : APValue(I) {}
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explicit CCValue(const APFloat &F) : APValue(F) {}
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CCValue(const APValue *E, unsigned N) : APValue(E, N) {}
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CCValue(const APSInt &R, const APSInt &I) : APValue(R, I) {}
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CCValue(const APFloat &R, const APFloat &I) : APValue(R, I) {}
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CCValue(const CCValue &V) : APValue(V), Designator(V.Designator) {}
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CCValue(LValueBase B, const CharUnits &O, unsigned I,
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const SubobjectDesignator &D) :
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APValue(B, O, APValue::NoLValuePath(), I), Designator(D) {}
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CCValue(ASTContext &Ctx, const APValue &V, GlobalValue) :
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APValue(V), Designator(Ctx, V) {
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}
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CCValue(const ValueDecl *D, bool IsDerivedMember,
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ArrayRef<const CXXRecordDecl*> Path) :
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APValue(D, IsDerivedMember, Path) {}
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CCValue(const AddrLabelExpr* LHSExpr, const AddrLabelExpr* RHSExpr) :
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APValue(LHSExpr, RHSExpr) {}
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SubobjectDesignator &getLValueDesignator() {
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assert(getKind() == LValue);
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return Designator;
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}
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const SubobjectDesignator &getLValueDesignator() const {
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return const_cast<CCValue*>(this)->getLValueDesignator();
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}
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APValue toAPValue() const {
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if (!isLValue())
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return *this;
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if (Designator.Invalid) {
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// This is not a core constant expression. An appropriate diagnostic
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// will have already been produced.
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return APValue(getLValueBase(), getLValueOffset(),
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APValue::NoLValuePath(), getLValueCallIndex());
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}
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return APValue(getLValueBase(), getLValueOffset(),
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Designator.Entries, Designator.IsOnePastTheEnd,
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getLValueCallIndex());
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}
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};
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/// A stack frame in the constexpr call stack.
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struct CallStackFrame {
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EvalInfo &Info;
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@ -344,16 +286,16 @@ namespace {
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/// ParmBindings - Parameter bindings for this function call, indexed by
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/// parameters' function scope indices.
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const CCValue *Arguments;
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const APValue *Arguments;
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typedef llvm::DenseMap<const Expr*, CCValue> MapTy;
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typedef llvm::DenseMap<const Expr*, APValue> MapTy;
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typedef MapTy::const_iterator temp_iterator;
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/// Temporaries - Temporary lvalues materialized within this stack frame.
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MapTy Temporaries;
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CallStackFrame(EvalInfo &Info, SourceLocation CallLoc,
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const FunctionDecl *Callee, const LValue *This,
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const CCValue *Arguments);
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const APValue *Arguments);
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~CallStackFrame();
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};
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@ -420,7 +362,7 @@ namespace {
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/// NextCallIndex - The next call index to assign.
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unsigned NextCallIndex;
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typedef llvm::DenseMap<const OpaqueValueExpr*, CCValue> MapTy;
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typedef llvm::DenseMap<const OpaqueValueExpr*, APValue> MapTy;
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/// OpaqueValues - Values used as the common expression in a
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/// BinaryConditionalOperator.
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MapTy OpaqueValues;
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@ -459,7 +401,7 @@ namespace {
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EvaluatingDecl(0), EvaluatingDeclValue(0), HasActiveDiagnostic(false),
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CheckingPotentialConstantExpression(false), IntExprEvaluatorDepth(0) {}
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const CCValue *getOpaqueValue(const OpaqueValueExpr *e) const {
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const APValue *getOpaqueValue(const OpaqueValueExpr *e) const {
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MapTy::const_iterator i = OpaqueValues.find(e);
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if (i == OpaqueValues.end()) return 0;
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return &i->second;
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@ -636,7 +578,7 @@ void SubobjectDesignator::diagnosePointerArithmetic(EvalInfo &Info,
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CallStackFrame::CallStackFrame(EvalInfo &Info, SourceLocation CallLoc,
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const FunctionDecl *Callee, const LValue *This,
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const CCValue *Arguments)
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const APValue *Arguments)
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: Info(Info), Caller(Info.CurrentCall), CallLoc(CallLoc), Callee(Callee),
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Index(Info.NextCallIndex++), This(This), Arguments(Arguments) {
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Info.CurrentCall = this;
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@ -665,17 +607,8 @@ static void describeCall(CallStackFrame *Frame, llvm::raw_ostream &Out) {
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Out << ", ";
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const ParmVarDecl *Param = *I;
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const CCValue &Arg = Frame->Arguments[ArgIndex];
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if (!Arg.isLValue() || Arg.getLValueDesignator().Invalid)
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Arg.printPretty(Out, Frame->Info.Ctx, Param->getType());
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else {
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// Convert the CCValue to an APValue without checking for constantness.
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APValue Value(Arg.getLValueBase(), Arg.getLValueOffset(),
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Arg.getLValueDesignator().Entries,
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Arg.getLValueDesignator().IsOnePastTheEnd,
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Arg.getLValueCallIndex());
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Value.printPretty(Out, Frame->Info.Ctx, Param->getType());
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}
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const APValue &Arg = Frame->Arguments[ArgIndex];
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Arg.printPretty(Out, Frame->Info.Ctx, Param->getType());
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if (ArgIndex == 0 && IsMemberCall)
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Out << "->" << *Frame->Callee << '(';
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@ -735,13 +668,13 @@ namespace {
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APSInt &getComplexIntReal() { return IntReal; }
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APSInt &getComplexIntImag() { return IntImag; }
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void moveInto(CCValue &v) const {
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void moveInto(APValue &v) const {
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if (isComplexFloat())
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v = CCValue(FloatReal, FloatImag);
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v = APValue(FloatReal, FloatImag);
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else
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v = CCValue(IntReal, IntImag);
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v = APValue(IntReal, IntImag);
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}
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void setFrom(const CCValue &v) {
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void setFrom(const APValue &v) {
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assert(v.isComplexFloat() || v.isComplexInt());
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if (v.isComplexFloat()) {
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makeComplexFloat();
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@ -768,15 +701,19 @@ namespace {
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SubobjectDesignator &getLValueDesignator() { return Designator; }
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const SubobjectDesignator &getLValueDesignator() const { return Designator;}
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void moveInto(CCValue &V) const {
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V = CCValue(Base, Offset, CallIndex, Designator);
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void moveInto(APValue &V) const {
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if (Designator.Invalid)
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V = APValue(Base, Offset, APValue::NoLValuePath(), CallIndex);
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else
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V = APValue(Base, Offset, Designator.Entries,
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Designator.IsOnePastTheEnd, CallIndex);
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}
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void setFrom(const CCValue &V) {
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void setFrom(ASTContext &Ctx, const APValue &V) {
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assert(V.isLValue());
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Base = V.getLValueBase();
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Offset = V.getLValueOffset();
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CallIndex = V.getLValueCallIndex();
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Designator = V.getLValueDesignator();
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Designator = SubobjectDesignator(Ctx, V);
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}
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void set(APValue::LValueBase B, unsigned I = 0) {
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@ -848,10 +785,10 @@ namespace {
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DeclAndIsDerivedMember.getPointer()->getDeclContext());
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}
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void moveInto(CCValue &V) const {
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V = CCValue(getDecl(), isDerivedMember(), Path);
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void moveInto(APValue &V) const {
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V = APValue(getDecl(), isDerivedMember(), Path);
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}
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void setFrom(const CCValue &V) {
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void setFrom(const APValue &V) {
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assert(V.isMemberPointer());
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DeclAndIsDerivedMember.setPointer(V.getMemberPointerDecl());
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DeclAndIsDerivedMember.setInt(V.isMemberPointerToDerivedMember());
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@ -934,7 +871,7 @@ namespace {
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};
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}
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static bool Evaluate(CCValue &Result, EvalInfo &Info, const Expr *E);
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static bool Evaluate(APValue &Result, EvalInfo &Info, const Expr *E);
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static bool EvaluateInPlace(APValue &Result, EvalInfo &Info,
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const LValue &This, const Expr *E,
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CheckConstantExpressionKind CCEK = CCEK_Constant,
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@ -945,7 +882,7 @@ static bool EvaluateMemberPointer(const Expr *E, MemberPtr &Result,
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EvalInfo &Info);
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static bool EvaluateTemporary(const Expr *E, LValue &Result, EvalInfo &Info);
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static bool EvaluateInteger(const Expr *E, APSInt &Result, EvalInfo &Info);
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static bool EvaluateIntegerOrLValue(const Expr *E, CCValue &Result,
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static bool EvaluateIntegerOrLValue(const Expr *E, APValue &Result,
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EvalInfo &Info);
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static bool EvaluateFloat(const Expr *E, APFloat &Result, EvalInfo &Info);
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static bool EvaluateComplex(const Expr *E, ComplexValue &Res, EvalInfo &Info);
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@ -1023,9 +960,8 @@ static void NoteLValueLocation(EvalInfo &Info, APValue::LValueBase Base) {
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}
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/// Check that this reference or pointer core constant expression is a valid
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/// value for an address or reference constant expression. Type T should be
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/// either LValue or CCValue. Return true if we can fold this expression,
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/// whether or not it's a constant expression.
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/// value for an address or reference constant expression. Return true if we
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/// can fold this expression, whether or not it's a constant expression.
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static bool CheckLValueConstantExpression(EvalInfo &Info, SourceLocation Loc,
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QualType Type, const LValue &LVal) {
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bool IsReferenceType = Type->isReferenceType();
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@ -1136,9 +1072,8 @@ static bool CheckConstantExpression(EvalInfo &Info, SourceLocation DiagLoc,
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}
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if (Value.isLValue()) {
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CCValue Val(Info.Ctx, Value, CCValue::GlobalValue());
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LValue LVal;
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LVal.setFrom(Val);
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LVal.setFrom(Info.Ctx, Value);
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return CheckLValueConstantExpression(Info, DiagLoc, Type, LVal);
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}
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@ -1159,7 +1094,7 @@ static bool IsWeakLValue(const LValue &Value) {
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return Decl && Decl->isWeak();
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}
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static bool EvalPointerValueAsBool(const CCValue &Value, bool &Result) {
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static bool EvalPointerValueAsBool(const APValue &Value, bool &Result) {
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// A null base expression indicates a null pointer. These are always
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// evaluatable, and they are false unless the offset is zero.
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if (!Value.getLValueBase()) {
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@ -1174,7 +1109,7 @@ static bool EvalPointerValueAsBool(const CCValue &Value, bool &Result) {
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return !Decl || !Decl->isWeak();
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}
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static bool HandleConversionToBool(const CCValue &Val, bool &Result) {
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static bool HandleConversionToBool(const APValue &Val, bool &Result) {
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switch (Val.getKind()) {
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case APValue::Uninitialized:
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return false;
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@ -1211,7 +1146,7 @@ static bool HandleConversionToBool(const CCValue &Val, bool &Result) {
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static bool EvaluateAsBooleanCondition(const Expr *E, bool &Result,
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EvalInfo &Info) {
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assert(E->isRValue() && "missing lvalue-to-rvalue conv in bool condition");
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CCValue Val;
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APValue Val;
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if (!Evaluate(Val, Info, E))
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return false;
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return HandleConversionToBool(Val, Result);
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@ -1277,7 +1212,7 @@ static bool HandleIntToFloatCast(EvalInfo &Info, const Expr *E,
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static bool EvalAndBitcastToAPInt(EvalInfo &Info, const Expr *E,
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llvm::APInt &Res) {
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CCValue SVal;
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APValue SVal;
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if (!Evaluate(SVal, Info, E))
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return false;
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if (SVal.isInt()) {
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@ -1470,7 +1405,7 @@ static bool HandleLValueComplexElement(EvalInfo &Info, const Expr *E,
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/// Try to evaluate the initializer for a variable declaration.
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static bool EvaluateVarDeclInit(EvalInfo &Info, const Expr *E,
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const VarDecl *VD,
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CallStackFrame *Frame, CCValue &Result) {
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CallStackFrame *Frame, APValue &Result) {
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// If this is a parameter to an active constexpr function call, perform
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// argument substitution.
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if (const ParmVarDecl *PVD = dyn_cast<ParmVarDecl>(VD)) {
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@ -1499,8 +1434,7 @@ static bool EvaluateVarDeclInit(EvalInfo &Info, const Expr *E,
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// If we're currently evaluating the initializer of this declaration, use that
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// in-flight value.
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if (Info.EvaluatingDecl == VD) {
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Result = CCValue(Info.Ctx, *Info.EvaluatingDeclValue,
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CCValue::GlobalValue());
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Result = *Info.EvaluatingDeclValue;
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return !Result.isUninit();
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}
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@ -1527,7 +1461,7 @@ static bool EvaluateVarDeclInit(EvalInfo &Info, const Expr *E,
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Info.addNotes(Notes);
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}
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Result = CCValue(Info.Ctx, *VD->getEvaluatedValue(), CCValue::GlobalValue());
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Result = *VD->getEvaluatedValue();
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return true;
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}
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@ -1567,7 +1501,7 @@ static APSInt ExtractStringLiteralCharacter(EvalInfo &Info, const Expr *Lit,
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/// Extract the designated sub-object of an rvalue.
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static bool ExtractSubobject(EvalInfo &Info, const Expr *E,
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CCValue &Obj, QualType ObjType,
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APValue &Obj, QualType ObjType,
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const SubobjectDesignator &Sub, QualType SubType) {
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if (Sub.Invalid)
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// A diagnostic will have already been produced.
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@ -1605,7 +1539,7 @@ static bool ExtractSubobject(EvalInfo &Info, const Expr *E,
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if (O->isLValue()) {
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assert(I == N - 1 && "extracting subobject of character?");
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assert(!O->hasLValuePath() || O->getLValuePath().empty());
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Obj = CCValue(ExtractStringLiteralCharacter(
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Obj = APValue(ExtractStringLiteralCharacter(
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Info, O->getLValueBase().get<const Expr*>(), Index));
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return true;
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} else if (O->getArrayInitializedElts() > Index)
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@ -1624,11 +1558,11 @@ static bool ExtractSubobject(EvalInfo &Info, const Expr *E,
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}
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assert(I == N - 1 && "extracting subobject of scalar?");
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if (O->isComplexInt()) {
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Obj = CCValue(Index ? O->getComplexIntImag()
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Obj = APValue(Index ? O->getComplexIntImag()
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: O->getComplexIntReal());
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} else {
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assert(O->isComplexFloat());
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Obj = CCValue(Index ? O->getComplexFloatImag()
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Obj = APValue(Index ? O->getComplexFloatImag()
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: O->getComplexFloatReal());
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}
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return true;
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@ -1682,7 +1616,7 @@ static bool ExtractSubobject(EvalInfo &Info, const Expr *E,
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}
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}
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Obj = CCValue(Info.Ctx, *O, CCValue::GlobalValue());
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Obj = APValue(*O);
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return true;
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}
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@ -1756,7 +1690,7 @@ static bool AreElementsOfSameArray(QualType ObjType,
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/// \param RVal - The produced value will be placed here.
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static bool HandleLValueToRValueConversion(EvalInfo &Info, const Expr *Conv,
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QualType Type,
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const LValue &LVal, CCValue &RVal) {
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const LValue &LVal, APValue &RVal) {
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// In C, an lvalue-to-rvalue conversion is never a constant expression.
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if (!Info.getLangOpts().CPlusPlus)
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Info.CCEDiag(Conv->getExprLoc(), diag::note_invalid_subexpr_in_const_expr);
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@ -1912,9 +1846,7 @@ static bool HandleLValueToRValueConversion(EvalInfo &Info, const Expr *Conv,
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// We represent a string literal array as an lvalue pointing at the
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// corresponding expression, rather than building an array of chars.
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// FIXME: Support PredefinedExpr, ObjCEncodeExpr, MakeStringConstant
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RVal = CCValue(Info.Ctx,
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APValue(Base, CharUnits::Zero(), APValue::NoLValuePath(), 0),
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CCValue::GlobalValue());
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RVal = APValue(Base, CharUnits::Zero(), APValue::NoLValuePath(), 0);
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} else {
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Info.Diag(Conv->getExprLoc(), diag::note_invalid_subexpr_in_const_expr);
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return false;
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@ -2078,7 +2010,7 @@ enum EvalStmtResult {
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}
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// Evaluate a statement.
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static EvalStmtResult EvaluateStmt(CCValue &Result, EvalInfo &Info,
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static EvalStmtResult EvaluateStmt(APValue &Result, EvalInfo &Info,
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const Stmt *S) {
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switch (S->getStmtClass()) {
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default:
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@ -2165,7 +2097,7 @@ static bool CheckConstexprFunction(EvalInfo &Info, SourceLocation CallLoc,
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}
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namespace {
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typedef SmallVector<CCValue, 8> ArgVector;
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typedef SmallVector<APValue, 8> ArgVector;
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}
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/// EvaluateArgs - Evaluate the arguments to a function call.
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@ -2189,7 +2121,7 @@ static bool EvaluateArgs(ArrayRef<const Expr*> Args, ArgVector &ArgValues,
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static bool HandleFunctionCall(SourceLocation CallLoc,
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const FunctionDecl *Callee, const LValue *This,
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ArrayRef<const Expr*> Args, const Stmt *Body,
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EvalInfo &Info, CCValue &Result) {
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EvalInfo &Info, APValue &Result) {
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ArgVector ArgValues(Args.size());
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if (!EvaluateArgs(Args, ArgValues, Info))
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return false;
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@ -2234,16 +2166,9 @@ static bool HandleConstructorCall(SourceLocation CallLoc, const LValue &This,
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((Definition->isCopyConstructor() && Definition->isTrivial()) ||
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(Definition->isMoveConstructor() && Definition->isTrivial()))) {
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LValue RHS;
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RHS.setFrom(ArgValues[0]);
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CCValue Value;
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if (!HandleLValueToRValueConversion(Info, Args[0], Args[0]->getType(),
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RHS, Value))
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return false;
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assert((Value.isStruct() || Value.isUnion()) &&
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"trivial copy/move from non-class type?");
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// Any CCValue of class type must already be a constant expression.
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Result = Value;
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return true;
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RHS.setFrom(Info.Ctx, ArgValues[0]);
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return HandleLValueToRValueConversion(Info, Args[0], Args[0]->getType(),
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RHS, Result);
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}
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// Reserve space for the struct members.
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@ -2446,7 +2371,7 @@ template <class Derived, typename RetTy=bool>
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class ExprEvaluatorBase
|
||||
: public ConstStmtVisitor<Derived, RetTy> {
|
||||
private:
|
||||
RetTy DerivedSuccess(const CCValue &V, const Expr *E) {
|
||||
RetTy DerivedSuccess(const APValue &V, const Expr *E) {
|
||||
return static_cast<Derived*>(this)->Success(V, E);
|
||||
}
|
||||
RetTy DerivedZeroInitialization(const Expr *E) {
|
||||
@ -2565,7 +2490,7 @@ public:
|
||||
LValue Obj;
|
||||
if (!HandleMemberPointerAccess(Info, E, Obj))
|
||||
return false;
|
||||
CCValue Result;
|
||||
APValue Result;
|
||||
if (!HandleLValueToRValueConversion(Info, E, E->getType(), Obj, Result))
|
||||
return false;
|
||||
return DerivedSuccess(Result, E);
|
||||
@ -2610,7 +2535,7 @@ public:
|
||||
}
|
||||
|
||||
RetTy VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
|
||||
const CCValue *Value = Info.getOpaqueValue(E);
|
||||
const APValue *Value = Info.getOpaqueValue(E);
|
||||
if (!Value) {
|
||||
const Expr *Source = E->getSourceExpr();
|
||||
if (!Source)
|
||||
@ -2699,7 +2624,7 @@ public:
|
||||
|
||||
const FunctionDecl *Definition = 0;
|
||||
Stmt *Body = FD->getBody(Definition);
|
||||
CCValue Result;
|
||||
APValue Result;
|
||||
|
||||
if (!CheckConstexprFunction(Info, E->getExprLoc(), FD, Definition) ||
|
||||
!HandleFunctionCall(E->getExprLoc(), Definition, This, Args, Body,
|
||||
@ -2733,7 +2658,7 @@ public:
|
||||
RetTy VisitMemberExpr(const MemberExpr *E) {
|
||||
assert(!E->isArrow() && "missing call to bound member function?");
|
||||
|
||||
CCValue Val;
|
||||
APValue Val;
|
||||
if (!Evaluate(Val, Info, E->getBase()))
|
||||
return false;
|
||||
|
||||
@ -2767,7 +2692,7 @@ public:
|
||||
LValue LVal;
|
||||
if (!EvaluateLValue(E->getSubExpr(), LVal, Info))
|
||||
return false;
|
||||
CCValue RVal;
|
||||
APValue RVal;
|
||||
// Note, we use the subexpression's type in order to retain cv-qualifiers.
|
||||
if (!HandleLValueToRValueConversion(Info, E, E->getSubExpr()->getType(),
|
||||
LVal, RVal))
|
||||
@ -2781,7 +2706,7 @@ public:
|
||||
|
||||
/// Visit a value which is evaluated, but whose value is ignored.
|
||||
void VisitIgnoredValue(const Expr *E) {
|
||||
CCValue Scratch;
|
||||
APValue Scratch;
|
||||
if (!Evaluate(Scratch, Info, E))
|
||||
Info.EvalStatus.HasSideEffects = true;
|
||||
}
|
||||
@ -2810,8 +2735,8 @@ public:
|
||||
LValueExprEvaluatorBase(EvalInfo &Info, LValue &Result) :
|
||||
ExprEvaluatorBaseTy(Info), Result(Result) {}
|
||||
|
||||
bool Success(const CCValue &V, const Expr *E) {
|
||||
Result.setFrom(V);
|
||||
bool Success(const APValue &V, const Expr *E) {
|
||||
Result.setFrom(this->Info.Ctx, V);
|
||||
return true;
|
||||
}
|
||||
|
||||
@ -2845,7 +2770,7 @@ public:
|
||||
return this->Error(E);
|
||||
|
||||
if (MD->getType()->isReferenceType()) {
|
||||
CCValue RefValue;
|
||||
APValue RefValue;
|
||||
if (!HandleLValueToRValueConversion(this->Info, E, MD->getType(), Result,
|
||||
RefValue))
|
||||
return false;
|
||||
@ -2993,7 +2918,7 @@ bool LValueExprEvaluator::VisitVarDecl(const Expr *E, const VarDecl *VD) {
|
||||
return Success(VD);
|
||||
}
|
||||
|
||||
CCValue V;
|
||||
APValue V;
|
||||
if (!EvaluateVarDeclInit(Info, E, VD, Info.CurrentCall, V))
|
||||
return false;
|
||||
return Success(V, E);
|
||||
@ -3120,8 +3045,8 @@ public:
|
||||
PointerExprEvaluator(EvalInfo &info, LValue &Result)
|
||||
: ExprEvaluatorBaseTy(info), Result(Result) {}
|
||||
|
||||
bool Success(const CCValue &V, const Expr *E) {
|
||||
Result.setFrom(V);
|
||||
bool Success(const APValue &V, const Expr *E) {
|
||||
Result.setFrom(Info.Ctx, V);
|
||||
return true;
|
||||
}
|
||||
bool ZeroInitialization(const Expr *E) {
|
||||
@ -3251,7 +3176,7 @@ bool PointerExprEvaluator::VisitCastExpr(const CastExpr* E) {
|
||||
case CK_IntegralToPointer: {
|
||||
CCEDiag(E, diag::note_constexpr_invalid_cast) << 2;
|
||||
|
||||
CCValue Value;
|
||||
APValue Value;
|
||||
if (!EvaluateIntegerOrLValue(SubExpr, Value, Info))
|
||||
break;
|
||||
|
||||
@ -3265,7 +3190,7 @@ bool PointerExprEvaluator::VisitCastExpr(const CastExpr* E) {
|
||||
return true;
|
||||
} else {
|
||||
// Cast is of an lvalue, no need to change value.
|
||||
Result.setFrom(Value);
|
||||
Result.setFrom(Info.Ctx, Value);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
@ -3319,7 +3244,7 @@ public:
|
||||
MemberPointerExprEvaluator(EvalInfo &Info, MemberPtr &Result)
|
||||
: ExprEvaluatorBaseTy(Info), Result(Result) {}
|
||||
|
||||
bool Success(const CCValue &V, const Expr *E) {
|
||||
bool Success(const APValue &V, const Expr *E) {
|
||||
Result.setFrom(V);
|
||||
return true;
|
||||
}
|
||||
@ -3402,7 +3327,7 @@ namespace {
|
||||
RecordExprEvaluator(EvalInfo &info, const LValue &This, APValue &Result)
|
||||
: ExprEvaluatorBaseTy(info), This(This), Result(Result) {}
|
||||
|
||||
bool Success(const CCValue &V, const Expr *E) {
|
||||
bool Success(const APValue &V, const Expr *E) {
|
||||
Result = V;
|
||||
return true;
|
||||
}
|
||||
@ -3498,7 +3423,7 @@ bool RecordExprEvaluator::VisitCastExpr(const CastExpr *E) {
|
||||
|
||||
case CK_DerivedToBase:
|
||||
case CK_UncheckedDerivedToBase: {
|
||||
CCValue DerivedObject;
|
||||
APValue DerivedObject;
|
||||
if (!Evaluate(DerivedObject, Info, E->getSubExpr()))
|
||||
return false;
|
||||
if (!DerivedObject.isStruct())
|
||||
@ -3696,7 +3621,7 @@ namespace {
|
||||
Result = APValue(V.data(), V.size());
|
||||
return true;
|
||||
}
|
||||
bool Success(const CCValue &V, const Expr *E) {
|
||||
bool Success(const APValue &V, const Expr *E) {
|
||||
assert(V.isVector());
|
||||
Result = V;
|
||||
return true;
|
||||
@ -3920,7 +3845,7 @@ bool ArrayExprEvaluator::VisitInitListExpr(const InitListExpr *E) {
|
||||
LValue LV;
|
||||
if (!EvaluateLValue(E->getInit(0), LV, Info))
|
||||
return false;
|
||||
CCValue Val;
|
||||
APValue Val;
|
||||
LV.moveInto(Val);
|
||||
return Success(Val, E);
|
||||
}
|
||||
@ -4025,9 +3950,9 @@ bool ArrayExprEvaluator::VisitCXXConstructExpr(const CXXConstructExpr *E) {
|
||||
namespace {
|
||||
class IntExprEvaluator
|
||||
: public ExprEvaluatorBase<IntExprEvaluator, bool> {
|
||||
CCValue &Result;
|
||||
APValue &Result;
|
||||
public:
|
||||
IntExprEvaluator(EvalInfo &info, CCValue &result)
|
||||
IntExprEvaluator(EvalInfo &info, APValue &result)
|
||||
: ExprEvaluatorBaseTy(info), Result(result) {}
|
||||
|
||||
bool Success(const llvm::APSInt &SI, const Expr *E) {
|
||||
@ -4037,7 +3962,7 @@ public:
|
||||
"Invalid evaluation result.");
|
||||
assert(SI.getBitWidth() == Info.Ctx.getIntWidth(E->getType()) &&
|
||||
"Invalid evaluation result.");
|
||||
Result = CCValue(SI);
|
||||
Result = APValue(SI);
|
||||
return true;
|
||||
}
|
||||
|
||||
@ -4046,7 +3971,7 @@ public:
|
||||
"Invalid evaluation result.");
|
||||
assert(I.getBitWidth() == Info.Ctx.getIntWidth(E->getType()) &&
|
||||
"Invalid evaluation result.");
|
||||
Result = CCValue(APSInt(I));
|
||||
Result = APValue(APSInt(I));
|
||||
Result.getInt().setIsUnsigned(
|
||||
E->getType()->isUnsignedIntegerOrEnumerationType());
|
||||
return true;
|
||||
@ -4055,7 +3980,7 @@ public:
|
||||
bool Success(uint64_t Value, const Expr *E) {
|
||||
assert(E->getType()->isIntegralOrEnumerationType() &&
|
||||
"Invalid evaluation result.");
|
||||
Result = CCValue(Info.Ctx.MakeIntValue(Value, E->getType()));
|
||||
Result = APValue(Info.Ctx.MakeIntValue(Value, E->getType()));
|
||||
return true;
|
||||
}
|
||||
|
||||
@ -4063,7 +3988,7 @@ public:
|
||||
return Success(Size.getQuantity(), E);
|
||||
}
|
||||
|
||||
bool Success(const CCValue &V, const Expr *E) {
|
||||
bool Success(const APValue &V, const Expr *E) {
|
||||
if (V.isLValue() || V.isAddrLabelDiff()) {
|
||||
Result = V;
|
||||
return true;
|
||||
@ -4174,14 +4099,14 @@ private:
|
||||
/// 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*).
|
||||
static bool EvaluateIntegerOrLValue(const Expr *E, CCValue &Result,
|
||||
static bool EvaluateIntegerOrLValue(const Expr *E, APValue &Result,
|
||||
EvalInfo &Info) {
|
||||
assert(E->isRValue() && E->getType()->isIntegralOrEnumerationType());
|
||||
return IntExprEvaluator(Info, Result).Visit(E);
|
||||
}
|
||||
|
||||
static bool EvaluateInteger(const Expr *E, APSInt &Result, EvalInfo &Info) {
|
||||
CCValue Val;
|
||||
APValue Val;
|
||||
if (!EvaluateIntegerOrLValue(E, Val, Info))
|
||||
return false;
|
||||
if (!Val.isInt()) {
|
||||
@ -4669,7 +4594,7 @@ bool IntExprEvaluator::VisitBinaryOperator(const BinaryOperator *E) {
|
||||
if (LHSAddrExpr->getLabel()->getDeclContext() !=
|
||||
RHSAddrExpr->getLabel()->getDeclContext())
|
||||
return false;
|
||||
Result = CCValue(LHSAddrExpr, RHSAddrExpr);
|
||||
Result = APValue(LHSAddrExpr, RHSAddrExpr);
|
||||
return true;
|
||||
}
|
||||
// Inequalities and subtractions between unrelated pointers have
|
||||
@ -4865,7 +4790,7 @@ bool IntExprEvaluator::VisitBinaryOperator(const BinaryOperator *E) {
|
||||
}
|
||||
|
||||
// The LHS of a constant expr is always evaluated and needed.
|
||||
CCValue LHSVal;
|
||||
APValue LHSVal;
|
||||
|
||||
bool LHSOK = EvaluateIntegerOrLValue(E->getLHS(), LHSVal, Info);
|
||||
if (!LHSOK && !Info.keepEvaluatingAfterFailure())
|
||||
@ -4874,7 +4799,7 @@ bool IntExprEvaluator::VisitBinaryOperator(const BinaryOperator *E) {
|
||||
if (!Visit(E->getRHS()) || !LHSOK)
|
||||
return false;
|
||||
|
||||
CCValue &RHSVal = Result;
|
||||
APValue &RHSVal = Result;
|
||||
|
||||
// Handle cases like (unsigned long)&a + 4.
|
||||
if (E->isAdditiveOp() && LHSVal.isLValue() && RHSVal.isInt()) {
|
||||
@ -4914,7 +4839,7 @@ bool IntExprEvaluator::VisitBinaryOperator(const BinaryOperator *E) {
|
||||
if (LHSAddrExpr->getLabel()->getDeclContext() !=
|
||||
RHSAddrExpr->getLabel()->getDeclContext())
|
||||
return false;
|
||||
Result = CCValue(LHSAddrExpr, RHSAddrExpr);
|
||||
Result = APValue(LHSAddrExpr, RHSAddrExpr);
|
||||
return true;
|
||||
}
|
||||
|
||||
@ -5369,7 +5294,7 @@ public:
|
||||
FloatExprEvaluator(EvalInfo &info, APFloat &result)
|
||||
: ExprEvaluatorBaseTy(info), Result(result) {}
|
||||
|
||||
bool Success(const CCValue &V, const Expr *e) {
|
||||
bool Success(const APValue &V, const Expr *e) {
|
||||
Result = V.getFloat();
|
||||
return true;
|
||||
}
|
||||
@ -5602,7 +5527,7 @@ public:
|
||||
ComplexExprEvaluator(EvalInfo &info, ComplexValue &Result)
|
||||
: ExprEvaluatorBaseTy(info), Result(Result) {}
|
||||
|
||||
bool Success(const CCValue &V, const Expr *e) {
|
||||
bool Success(const APValue &V, const Expr *e) {
|
||||
Result.setFrom(V);
|
||||
return true;
|
||||
}
|
||||
@ -5981,7 +5906,7 @@ class VoidExprEvaluator
|
||||
public:
|
||||
VoidExprEvaluator(EvalInfo &Info) : ExprEvaluatorBaseTy(Info) {}
|
||||
|
||||
bool Success(const CCValue &V, const Expr *e) { return true; }
|
||||
bool Success(const APValue &V, const Expr *e) { return true; }
|
||||
|
||||
bool VisitCastExpr(const CastExpr *E) {
|
||||
switch (E->getCastKind()) {
|
||||
@ -6004,7 +5929,7 @@ static bool EvaluateVoid(const Expr *E, EvalInfo &Info) {
|
||||
// Top level Expr::EvaluateAsRValue method.
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
static bool Evaluate(CCValue &Result, EvalInfo &Info, const Expr *E) {
|
||||
static bool Evaluate(APValue &Result, EvalInfo &Info, const Expr *E) {
|
||||
// In C, function designators are not lvalues, but we evaluate them as if they
|
||||
// are.
|
||||
if (E->isGLValue() || E->getType()->isFunctionType()) {
|
||||
@ -6027,7 +5952,7 @@ static bool Evaluate(CCValue &Result, EvalInfo &Info, const Expr *E) {
|
||||
llvm::APFloat F(0.0);
|
||||
if (!EvaluateFloat(E, F, Info))
|
||||
return false;
|
||||
Result = CCValue(F);
|
||||
Result = APValue(F);
|
||||
} else if (E->getType()->isAnyComplexType()) {
|
||||
ComplexValue C;
|
||||
if (!EvaluateComplex(E, C, Info))
|
||||
@ -6089,11 +6014,7 @@ static bool EvaluateInPlace(APValue &Result, EvalInfo &Info, const LValue &This,
|
||||
}
|
||||
|
||||
// For any other type, in-place evaluation is unimportant.
|
||||
CCValue CoreConstResult;
|
||||
if (!Evaluate(CoreConstResult, Info, E))
|
||||
return false;
|
||||
Result = CoreConstResult.toAPValue();
|
||||
return true;
|
||||
return Evaluate(Result, Info, E);
|
||||
}
|
||||
|
||||
/// EvaluateAsRValue - Try to evaluate this expression, performing an implicit
|
||||
@ -6102,20 +6023,17 @@ static bool EvaluateAsRValue(EvalInfo &Info, const Expr *E, APValue &Result) {
|
||||
if (!CheckLiteralType(Info, E))
|
||||
return false;
|
||||
|
||||
CCValue Value;
|
||||
if (!::Evaluate(Value, Info, E))
|
||||
if (!::Evaluate(Result, Info, E))
|
||||
return false;
|
||||
|
||||
if (E->isGLValue()) {
|
||||
LValue LV;
|
||||
LV.setFrom(Value);
|
||||
if (!HandleLValueToRValueConversion(Info, E, E->getType(), LV, Value))
|
||||
LV.setFrom(Info.Ctx, Result);
|
||||
if (!HandleLValueToRValueConversion(Info, E, E->getType(), LV, Result))
|
||||
return false;
|
||||
}
|
||||
|
||||
// Check this core constant expression is a constant expression, and if so,
|
||||
// convert it to one.
|
||||
Result = Value.toAPValue();
|
||||
// Check this core constant expression is a constant expression.
|
||||
return CheckConstantExpression(Info, E->getExprLoc(), E->getType(), Result);
|
||||
}
|
||||
|
||||
@ -6147,9 +6065,7 @@ bool Expr::EvaluateAsBooleanCondition(bool &Result,
|
||||
const ASTContext &Ctx) const {
|
||||
EvalResult Scratch;
|
||||
return EvaluateAsRValue(Scratch, Ctx) &&
|
||||
HandleConversionToBool(CCValue(const_cast<ASTContext&>(Ctx),
|
||||
Scratch.Val, CCValue::GlobalValue()),
|
||||
Result);
|
||||
HandleConversionToBool(Scratch.Val, Result);
|
||||
}
|
||||
|
||||
bool Expr::EvaluateAsInt(APSInt &Result, const ASTContext &Ctx,
|
||||
@ -6175,9 +6091,7 @@ bool Expr::EvaluateAsLValue(EvalResult &Result, const ASTContext &Ctx) const {
|
||||
Ctx.getLValueReferenceType(getType()), LV))
|
||||
return false;
|
||||
|
||||
CCValue Tmp;
|
||||
LV.moveInto(Tmp);
|
||||
Result.Val = Tmp.toAPValue();
|
||||
LV.moveInto(Result.Val);
|
||||
return true;
|
||||
}
|
||||
|
||||
@ -6752,14 +6666,12 @@ bool Expr::isPotentialConstantExpr(const FunctionDecl *FD,
|
||||
|
||||
SourceLocation Loc = FD->getLocation();
|
||||
|
||||
if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(FD)) {
|
||||
APValue Scratch;
|
||||
APValue Scratch;
|
||||
if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(FD))
|
||||
HandleConstructorCall(Loc, This, Args, CD, Info, Scratch);
|
||||
} else {
|
||||
CCValue Scratch;
|
||||
else
|
||||
HandleFunctionCall(Loc, FD, (MD && MD->isInstance()) ? &This : 0,
|
||||
Args, FD->getBody(), Info, Scratch);
|
||||
}
|
||||
|
||||
return Diags.empty();
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user