Revert r147271. This fixes PR11676.

llvm-svn: 147362

clang/lib/AST/ExprConstant.cpp

@@ -767,25 +767,9 @@ static bool CheckLValueConstantExpression(EvalInfo &Info, const Expr *E,
   return true;
 }
 
-/// Check that this core constant expression is of literal type, and if not,
-/// produce an appropriate diagnostic.
-static bool CheckLiteralType(EvalInfo &Info, const Expr *E) {
-  if (!E->isRValue() || E->getType()->isLiteralType())
-    return true;
-
-  // Prvalue constant expressions must be of literal types.
-  if (Info.getLangOpts().CPlusPlus0x)
-    Info.Diag(E->getExprLoc(), diag::note_constexpr_nonliteral)
-      << E->getType();
-  else
-    Info.Diag(E->getExprLoc(), diag::note_invalid_subexpr_in_const_expr);
-  return false;
-}
-
 /// Check that this core constant expression value is a valid value for a
 /// constant expression, and if it is, produce the corresponding constant value.
-/// If not, report an appropriate diagnostic. Does not check that the expression
-/// is of literal type.
+/// If not, report an appropriate diagnostic.
 static bool CheckConstantExpression(EvalInfo &Info, const Expr *E,
                                     const CCValue &CCValue, APValue &Value,
                                     CheckConstantExpressionKind CCEK
@@ -1660,23 +1644,17 @@ static EvalStmtResult EvaluateStmt(APValue &Result, EvalInfo &Info,
 /// constexpr. If it is marked as constexpr, we will never implicitly define it,
 /// so we need special handling.
 static bool CheckTrivialDefaultConstructor(EvalInfo &Info, SourceLocation Loc,
-                                           const CXXConstructorDecl *CD,
-                                           bool IsValueInitialization) {
+                                    const CXXConstructorDecl *CD) {
   if (!CD->isTrivial() || !CD->isDefaultConstructor())
     return false;
 
   if (!CD->isConstexpr()) {
     if (Info.getLangOpts().CPlusPlus0x) {
-      // Value-initialization does not call a trivial default constructor, so
-      // such a call is a core constant expression whether or not the
-      // constructor is constexpr.
-      if (!IsValueInitialization) {
-        // FIXME: If DiagDecl is an implicitly-declared special member function,
-        // we should be much more explicit about why it's not constexpr.
-        Info.CCEDiag(Loc, diag::note_constexpr_invalid_function, 1)
-          << /*IsConstexpr*/0 << /*IsConstructor*/1 << CD;
-        Info.Note(CD->getLocation(), diag::note_declared_at);
-      }
+      // FIXME: If DiagDecl is an implicitly-declared special member function,
+      // we should be much more explicit about why it's not constexpr.
+      Info.CCEDiag(Loc, diag::note_constexpr_invalid_function, 1)
+        << /*IsConstexpr*/0 << /*IsConstructor*/1 << CD;
+      Info.Note(CD->getLocation(), diag::note_declared_at);
     } else {
       Info.CCEDiag(Loc, diag::note_invalid_subexpr_in_const_expr);
     }
@@ -1742,7 +1720,8 @@ static bool HandleFunctionCall(const Expr *CallExpr, const FunctionDecl *Callee,
 static bool HandleConstructorCall(const Expr *CallExpr, const LValue &This,
                                   ArrayRef<const Expr*> Args,
                                   const CXXConstructorDecl *Definition,
-                                  EvalInfo &Info, APValue &Result) {
+                                  EvalInfo &Info,
+                                  APValue &Result) {
   if (!Info.CheckCallLimit(CallExpr->getExprLoc()))
     return false;
 
@@ -1761,7 +1740,7 @@ static bool HandleConstructorCall(const Expr *CallExpr, const LValue &This,
 
   // Reserve space for the struct members.
   const CXXRecordDecl *RD = Definition->getParent();
-  if (!RD->isUnion() && Result.isUninit())
+  if (!RD->isUnion())
     Result = APValue(APValue::UninitStruct(), RD->getNumBases(),
                      std::distance(RD->field_begin(), RD->field_end()));
 
@@ -1930,8 +1909,8 @@ private:
   RetTy DerivedSuccess(const CCValue &V, const Expr *E) {
     return static_cast<Derived*>(this)->Success(V, E);
   }
-  RetTy DerivedZeroInitialization(const Expr *E) {
-    return static_cast<Derived*>(this)->ZeroInitialization(E);
+  RetTy DerivedValueInitialization(const Expr *E) {
+    return static_cast<Derived*>(this)->ValueInitialization(E);
   }
 
 protected:
@@ -1953,7 +1932,7 @@ protected:
     return Error(E, diag::note_invalid_subexpr_in_const_expr);
   }
 
-  RetTy ZeroInitialization(const Expr *E) { return Error(E); }
+  RetTy ValueInitialization(const Expr *E) { return Error(E); }
 
 public:
   ExprEvaluatorBase(EvalInfo &Info) : Info(Info) {}
@@ -2130,20 +2109,20 @@ public:
   RetTy VisitInitListExpr(const InitListExpr *E) {
     if (Info.getLangOpts().CPlusPlus0x) {
       if (E->getNumInits() == 0)
-        return DerivedZeroInitialization(E);
+        return DerivedValueInitialization(E);
       if (E->getNumInits() == 1)
         return StmtVisitorTy::Visit(E->getInit(0));
     }
     return Error(E);
   }
   RetTy VisitImplicitValueInitExpr(const ImplicitValueInitExpr *E) {
-    return DerivedZeroInitialization(E);
+    return DerivedValueInitialization(E);
   }
   RetTy VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *E) {
-    return DerivedZeroInitialization(E);
+    return DerivedValueInitialization(E);
   }
   RetTy VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *E) {
-    return DerivedZeroInitialization(E);
+    return DerivedValueInitialization(E);
   }
 
   /// A member expression where the object is a prvalue is itself a prvalue.
@@ -2532,7 +2511,7 @@ public:
     Result.setFrom(V);
     return true;
   }
-  bool ZeroInitialization(const Expr *E) {
+  bool ValueInitialization(const Expr *E) {
     return Success((Expr*)0);
   }
 
@@ -2652,7 +2631,7 @@ bool PointerExprEvaluator::VisitCastExpr(const CastExpr* E) {
     return HandleBaseToDerivedCast(Info, E, Result);
 
   case CK_NullToPointer:
-    return ZeroInitialization(E);
+    return ValueInitialization(E);
 
   case CK_IntegralToPointer: {
     CCEDiag(E, diag::note_constexpr_invalid_cast) << 2;
@@ -2725,7 +2704,7 @@ public:
     Result.setFrom(V);
     return true;
   }
-  bool ZeroInitialization(const Expr *E) {
+  bool ValueInitialization(const Expr *E) {
     return Success((const ValueDecl*)0);
   }
 
@@ -2746,7 +2725,7 @@ bool MemberPointerExprEvaluator::VisitCastExpr(const CastExpr *E) {
     return ExprEvaluatorBaseTy::VisitCastExpr(E);
 
   case CK_NullToMemberPointer:
-    return ZeroInitialization(E);
+    return ValueInitialization(E);
 
   case CK_BaseToDerivedMemberPointer: {
     if (!Visit(E->getSubExpr()))
@@ -2807,7 +2786,6 @@ namespace {
     bool Success(const CCValue &V, const Expr *E) {
       return CheckConstantExpression(Info, E, V, Result);
     }
-    bool ZeroInitialization(const Expr *E);
 
     bool VisitCastExpr(const CastExpr *E);
     bool VisitInitListExpr(const InitListExpr *E);
@@ -2815,75 +2793,6 @@ namespace {
   };
 }
 
-/// 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
-static bool HandleClassZeroInitialization(EvalInfo &Info, const RecordDecl *RD,
-                                          const LValue &This, APValue &Result) {
-  assert(!RD->isUnion() && "Expected non-union class type");
-  const CXXRecordDecl *CD = dyn_cast<CXXRecordDecl>(RD);
-  Result = APValue(APValue::UninitStruct(), CD ? CD->getNumBases() : 0,
-                   std::distance(RD->field_begin(), RD->field_end()));
-
-  const ASTRecordLayout &Layout = Info.Ctx.getASTRecordLayout(RD);
-
-  if (CD) {
-    unsigned Index = 0;
-    for (CXXRecordDecl::base_class_const_iterator I = CD->bases_begin(),
-           E = CD->bases_end(); I != E; ++I, ++Index) {
-      const CXXRecordDecl *Base = I->getType()->getAsCXXRecordDecl();
-      LValue Subobject = This;
-      HandleLValueDirectBase(Info, Subobject, CD, Base, &Layout);
-      if (!HandleClassZeroInitialization(Info, Base, Subobject,
-                                         Result.getStructBase(Index)))
-        return false;
-    }
-  }
-
-  for (RecordDecl::field_iterator I = RD->field_begin(), E = RD->field_end();
-       I != E; ++I) {
-    // -- if T is a reference type, no initialization is performed.
-    if ((*I)->getType()->isReferenceType())
-      continue;
-
-    LValue Subobject = This;
-    HandleLValueMember(Info, Subobject, *I, &Layout);
-
-    ImplicitValueInitExpr VIE((*I)->getType());
-    if (!EvaluateConstantExpression(
-          Result.getStructField((*I)->getFieldIndex()), Info, Subobject, &VIE))
-      return false;
-  }
-
-  return true;
-}
-
-bool RecordExprEvaluator::ZeroInitialization(const Expr *E) {
-  const RecordDecl *RD = E->getType()->castAs<RecordType>()->getDecl();
-  if (RD->isUnion()) {
-    // C++11 [dcl.init]p5: If T is a (possibly cv-qualified) union type, the
-    // object's first non-static named data member is zero-initialized
-    RecordDecl::field_iterator I = RD->field_begin();
-    if (I == RD->field_end()) {
-      Result = APValue((const FieldDecl*)0);
-      return true;
-    }
-
-    LValue Subobject = This;
-    HandleLValueMember(Info, Subobject, *I);
-    Result = APValue(*I);
-    ImplicitValueInitExpr VIE((*I)->getType());
-    return EvaluateConstantExpression(Result.getUnionValue(), Info,
-                                      Subobject, &VIE);
-  }
-
-  return HandleClassZeroInitialization(Info, RD, This, Result);
-}
-
 bool RecordExprEvaluator::VisitCastExpr(const CastExpr *E) {
   switch (E->getCastKind()) {
   default:
@@ -2967,11 +2876,7 @@ bool RecordExprEvaluator::VisitInitListExpr(const InitListExpr *E) {
 
 bool RecordExprEvaluator::VisitCXXConstructExpr(const CXXConstructExpr *E) {
   const CXXConstructorDecl *FD = E->getConstructor();
-  bool ZeroInit = E->requiresZeroInitialization();
-  if (CheckTrivialDefaultConstructor(Info, E->getExprLoc(), FD, ZeroInit)) {
-    if (ZeroInit)
-      return ZeroInitialization(E);
-
+  if (CheckTrivialDefaultConstructor(Info, E->getExprLoc(), FD)) {
     const CXXRecordDecl *RD = FD->getParent();
     if (RD->isUnion())
       Result = APValue((FieldDecl*)0);
@@ -2988,14 +2893,11 @@ bool RecordExprEvaluator::VisitCXXConstructExpr(const CXXConstructExpr *E) {
     return false;
 
   // FIXME: Elide the copy/move construction wherever we can.
-  if (E->isElidable() && !ZeroInit)
+  if (E->isElidable())
     if (const MaterializeTemporaryExpr *ME
           = dyn_cast<MaterializeTemporaryExpr>(E->getArg(0)))
       return Visit(ME->GetTemporaryExpr());
 
-  if (ZeroInit && !ZeroInitialization(E))
-    return false;
-
   llvm::ArrayRef<const Expr*> Args(E->getArgs(), E->getNumArgs());
   return HandleConstructorCall(E, This, Args,
                                cast<CXXConstructorDecl>(Definition), Info,
@@ -3005,6 +2907,7 @@ bool RecordExprEvaluator::VisitCXXConstructExpr(const CXXConstructExpr *E) {
 static bool EvaluateRecord(const Expr *E, const LValue &This,
                            APValue &Result, EvalInfo &Info) {
   assert(E->isRValue() && E->getType()->isRecordType() &&
+         E->getType()->isLiteralType() &&
          "can't evaluate expression as a record rvalue");
   return RecordExprEvaluator(Info, This, Result).Visit(E);
 }
@@ -3054,6 +2957,14 @@ public:
 /// Evaluate an expression of record type as a temporary.
 static bool EvaluateTemporary(const Expr *E, LValue &Result, EvalInfo &Info) {
   assert(E->isRValue() && E->getType()->isRecordType());
+  if (!E->getType()->isLiteralType()) {
+    if (Info.getLangOpts().CPlusPlus0x)
+      Info.Diag(E->getExprLoc(), diag::note_constexpr_nonliteral)
+        << E->getType();
+    else
+      Info.Diag(E->getExprLoc(), diag::note_invalid_subexpr_in_const_expr);
+    return false;
+  }
   return TemporaryExprEvaluator(Info, Result).Visit(E);
 }
 
@@ -3081,7 +2992,7 @@ namespace {
       Result = V;
       return true;
     }
-    bool ZeroInitialization(const Expr *E);
+    bool ValueInitialization(const Expr *E);
 
     bool VisitUnaryReal(const UnaryOperator *E)
       { return Visit(E->getSubExpr()); }
@@ -3233,7 +3144,7 @@ VectorExprEvaluator::VisitInitListExpr(const InitListExpr *E) {
 }
 
 bool
-VectorExprEvaluator::ZeroInitialization(const Expr *E) {
+VectorExprEvaluator::ValueInitialization(const Expr *E) {
   const VectorType *VT = E->getType()->getAs<VectorType>();
   QualType EltTy = VT->getElementType();
   APValue ZeroElement;
@@ -3249,7 +3160,7 @@ VectorExprEvaluator::ZeroInitialization(const Expr *E) {
 
 bool VectorExprEvaluator::VisitUnaryImag(const UnaryOperator *E) {
   VisitIgnoredValue(E->getSubExpr());
-  return ZeroInitialization(E);
+  return ValueInitialization(E);
 }
 
 //===----------------------------------------------------------------------===//
@@ -3272,7 +3183,7 @@ namespace {
       return true;
     }
 
-    bool ZeroInitialization(const Expr *E) {
+    bool ValueInitialization(const Expr *E) {
       const ConstantArrayType *CAT =
           Info.Ctx.getAsConstantArrayType(E->getType());
       if (!CAT)
@@ -3282,7 +3193,7 @@ namespace {
                        CAT->getSize().getZExtValue());
       if (!Result.hasArrayFiller()) return true;
 
-      // Zero-initialize all elements.
+      // Value-initialize all elements.
       LValue Subobject = This;
       Subobject.Designator.addIndex(0);
       ImplicitValueInitExpr VIE(CAT->getElementType());
@@ -3297,7 +3208,8 @@ namespace {
 
 static bool EvaluateArray(const Expr *E, const LValue &This,
                           APValue &Result, EvalInfo &Info) {
-  assert(E->isRValue() && E->getType()->isArrayType() && "not an array rvalue");
+  assert(E->isRValue() && E->getType()->isArrayType() &&
+         E->getType()->isLiteralType() && "not a literal array rvalue");
   return ArrayExprEvaluator(Info, This, Result).Visit(E);
 }
 
@@ -3367,16 +3279,7 @@ bool ArrayExprEvaluator::VisitCXXConstructExpr(const CXXConstructExpr *E) {
 
   const CXXConstructorDecl *FD = E->getConstructor();
 
-  bool ZeroInit = E->requiresZeroInitialization();
-  if (CheckTrivialDefaultConstructor(Info, E->getExprLoc(), FD, ZeroInit)) {
-    if (ZeroInit) {
-      LValue Subobject = This;
-      Subobject.Designator.addIndex(0);
-      ImplicitValueInitExpr VIE(CAT->getElementType());
-      return EvaluateConstantExpression(Result.getArrayFiller(), Info,
-                                        Subobject, &VIE);
-    }
-
+  if (CheckTrivialDefaultConstructor(Info, E->getExprLoc(), FD)) {
     const CXXRecordDecl *RD = FD->getParent();
     if (RD->isUnion())
       Result.getArrayFiller() = APValue((FieldDecl*)0);
@@ -3399,14 +3302,6 @@ bool ArrayExprEvaluator::VisitCXXConstructExpr(const CXXConstructExpr *E) {
   //   S s[10];
   LValue Subobject = This;
   Subobject.Designator.addIndex(0);
-
-  if (ZeroInit) {
-    ImplicitValueInitExpr VIE(CAT->getElementType());
-    if (!EvaluateConstantExpression(Result.getArrayFiller(), Info, Subobject,
-                                    &VIE))
-      return false;
-  }
-
   llvm::ArrayRef<const Expr*> Args(E->getArgs(), E->getNumArgs());
   return HandleConstructorCall(E, Subobject, Args,
                                cast<CXXConstructorDecl>(Definition),
@@ -3470,7 +3365,7 @@ public:
     return Success(V.getInt(), E);
   }
 
-  bool ZeroInitialization(const Expr *E) { return Success(0, E); }
+  bool ValueInitialization(const Expr *E) { return Success(0, E); }
 
   //===--------------------------------------------------------------------===//
   //                            Visitor Methods
@@ -3513,7 +3408,7 @@ public:
 
   // Note, GNU defines __null as an integer, not a pointer.
   bool VisitGNUNullExpr(const GNUNullExpr *E) {
-    return ZeroInitialization(E);
+    return ValueInitialization(E);
   }
 
   bool VisitUnaryTypeTraitExpr(const UnaryTypeTraitExpr *E) {
@@ -4516,7 +4411,7 @@ public:
     return true;
   }
 
-  bool ZeroInitialization(const Expr *E) {
+  bool ValueInitialization(const Expr *E) {
     Result = APFloat::getZero(Info.Ctx.getFloatTypeSemantics(E->getType()));
     return true;
   }
@@ -4531,7 +4426,8 @@ public:
   bool VisitUnaryReal(const UnaryOperator *E);
   bool VisitUnaryImag(const UnaryOperator *E);
 
-  // FIXME: Missing: array subscript of vector, member of vector
+  // FIXME: Missing: array subscript of vector, member of vector,
+  //                 ImplicitValueInitExpr
 };
 } // end anonymous namespace
 
@@ -5138,13 +5034,13 @@ static bool Evaluate(CCValue &Result, EvalInfo &Info, const Expr *E) {
       return false;
     P.moveInto(Result);
     return true;
-  } else if (E->getType()->isArrayType()) {
+  } else if (E->getType()->isArrayType() && E->getType()->isLiteralType()) {
     LValue LV;
     LV.set(E, Info.CurrentCall);
     if (!EvaluateArray(E, LV, Info.CurrentCall->Temporaries[E], Info))
       return false;
     Result = Info.CurrentCall->Temporaries[E];
-  } else if (E->getType()->isRecordType()) {
+  } else if (E->getType()->isRecordType() && E->getType()->isLiteralType()) {
     LValue LV;
     LV.set(E, Info.CurrentCall);
     if (!EvaluateRecord(E, LV, Info.CurrentCall->Temporaries[E], Info))
@@ -5176,10 +5072,7 @@ static bool Evaluate(CCValue &Result, EvalInfo &Info, const Expr *E) {
 static bool EvaluateConstantExpression(APValue &Result, EvalInfo &Info,
                                        const LValue &This, const Expr *E,
                                        CheckConstantExpressionKind CCEK) {
-  if (!CheckLiteralType(Info, E))
-    return false;
-
-  if (E->isRValue()) {
+  if (E->isRValue() && E->getType()->isLiteralType()) {
     // Evaluate arrays and record types in-place, so that later initializers can
     // refer to earlier-initialized members of the object.
     if (E->getType()->isArrayType())
@@ -5197,9 +5090,6 @@ static bool EvaluateConstantExpression(APValue &Result, EvalInfo &Info,
 /// EvaluateAsRValue - Try to evaluate this expression, performing an implicit
 /// lvalue-to-rvalue cast if it is an lvalue.
 static bool EvaluateAsRValue(EvalInfo &Info, const Expr *E, APValue &Result) {
-  if (!CheckLiteralType(Info, E))
-    return false;
-
   CCValue Value;
   if (!::Evaluate(Value, Info, E))
     return false;
@@ -5283,23 +5173,9 @@ bool Expr::EvaluateAsInitializer(APValue &Value, const ASTContext &Ctx,
   EvalInfo InitInfo(Ctx, EStatus);
   InitInfo.setEvaluatingDecl(VD, Value);
 
-  if (!CheckLiteralType(InitInfo, this))
-    return false;
-
   LValue LVal;
   LVal.set(VD);
 
-  // C++11 [basic.start.init]p2:
-  //  Variables with static storage duration or thread storage duration shall be
-  //  zero-initialized before any other initialization takes place.
-  // This behavior is not present in C.
-  if (Ctx.getLangOptions().CPlusPlus && !VD->hasLocalStorage() &&
-      !VD->getType()->isReferenceType()) {
-    ImplicitValueInitExpr VIE(VD->getType());
-    if (!EvaluateConstantExpression(Value, InitInfo, LVal, &VIE))
-      return false;
-  }
-
   return EvaluateConstantExpression(Value, InitInfo, LVal, this) &&
          !EStatus.HasSideEffects;
 }

clang/lib/AST/Type.cpp

@@ -1126,6 +1126,10 @@ bool Type::isLiteralType() const {
   if (BaseTy->isIncompleteType())
     return false;
 
+  // Objective-C lifetime types are not literal types.
+  if (BaseTy->isObjCRetainableType())
+    return false;
+  
   // C++0x [basic.types]p10:
   //   A type is a literal type if it is:
   //    -- a scalar type; or

clang/test/CXX/expr/expr.const/p2-0x.cpp

@@ -33,11 +33,11 @@ struct NonConstexpr3 {
   int m : NonConstexpr2().n; // expected-error {{constant expression}} expected-note {{undefined constructor 'NonConstexpr2'}}
 };
 struct NonConstexpr4 {
-  NonConstexpr4(); // expected-note {{declared here}}
+  NonConstexpr4();
   int n;
 };
 struct NonConstexpr5 {
-  int n : NonConstexpr4().n; // expected-error {{constant expression}} expected-note {{non-constexpr constructor 'NonConstexpr4' cannot be used in a constant expression}}
+  int n : NonConstexpr4().n; // expected-error {{constant expression}} expected-note {{non-literal type 'NonConstexpr4' cannot be used in a constant expression}}
 };
 
 // - an invocation of an undefined constexpr function or an undefined

clang/test/CXX/special/class.ctor/p6-0x.cpp

@@ -8,16 +8,8 @@ struct NonConstexpr1 { // expected-note {{here}}
 struct NonConstexpr2 { // expected-note {{here}}
   NonConstexpr1 nl;
 };
-struct NonConstexpr2a : NonConstexpr1 { };
-constexpr NonConstexpr1 nc1 = NonConstexpr1(); // ok, does not call constructor
-constexpr NonConstexpr2 nc2 = NonConstexpr2(); // ok, does not call constructor
-constexpr NonConstexpr2a nc2a = NonConstexpr2a(); // expected-error {{constant expression}} expected-note {{non-literal type 'const NonConstexpr2a'}}
-constexpr int nc2_a = NonConstexpr2().nl.a; // ok
-constexpr int nc2a_a = NonConstexpr2a().a; // ok
-struct Helper {
-  friend constexpr NonConstexpr1::NonConstexpr1(); // expected-error {{follows non-constexpr declaration}}
-  friend constexpr NonConstexpr2::NonConstexpr2(); // expected-error {{follows non-constexpr declaration}}
-};
+constexpr NonConstexpr1 nc1 = NonConstexpr1(); // expected-error {{constant expression}} expected-note {{non-constexpr constructor 'NonConstexpr1'}}
+constexpr NonConstexpr2 nc2 = NonConstexpr2(); // expected-error {{constant expression}} expected-note {{non-constexpr constructor 'NonConstexpr2'}}
 
 struct Constexpr1 {};
 constexpr Constexpr1 c1 = Constexpr1(); // ok

clang/test/CodeGenCXX/value-init.cpp

@@ -134,7 +134,8 @@ namespace zeroinit {
   // CHECK: define i32 @_ZN8zeroinit4testEv()
   int test() {
     // CHECK: call void @llvm.memset.p0i8.i64
-    // CHECK: ret i32 0
+    // CHECK: getelementptr
+    // CHECK: ret i32
     return S().i;
   }
 

clang/test/SemaCXX/constexpr-printing.cpp

@@ -11,11 +11,8 @@ struct S {
 
 constexpr int extract(const S &s) { return s.n; } // expected-note {{read of uninitialized object is not allowed in a constant expression}}
 
-constexpr S s1; // ok
-void f() {
-  constexpr S s1; // expected-error {{constant expression}} expected-note {{in call to 'S()'}}
-  constexpr S s2(10);
-}
+constexpr S s1; // expected-error {{constant expression}} expected-note {{in call to 'S()'}}
+constexpr S s2(10);
 
 typedef __attribute__((vector_size(16))) int vector_int;
 

clang/test/SemaCXX/constexpr-value-init.cpp

@@ -1,31 +0,0 @@
-// RUN: %clang_cc1 %s -std=c++11 -fsyntax-only -verify
-
-struct A {
-  constexpr A() : a(b + 1), b(a + 1) {} // expected-note {{uninitialized}}
-  int a;
-  int b;
-};
-struct B {
-  A a;
-};
-
-constexpr A a; // ok, zero initialization preceeds static initialization
-void f() {
-  constexpr A a; // expected-error {{constant expression}} expected-note {{in call to 'A()'}}
-}
-
-constexpr B b1; // expected-error {{requires a user-provided default constructor}}
-constexpr B b2 = B(); // ok
-static_assert(b2.a.a == 1, "");
-static_assert(b2.a.b == 2, "");
-
-struct C {
-  int c;
-};
-struct D : C { int d; };
-constexpr C c1; // expected-error {{requires a user-provided default constructor}}
-constexpr C c2 = C(); // ok
-constexpr D d1; // expected-error {{requires a user-provided default constructor}}
-constexpr D d2 = D(); // expected-error {{constant expression}} expected-note {{non-literal type 'const D'}}
-static_assert(D().c == 0, "");
-static_assert(D().d == 0, "");

clang/test/SemaObjCXX/arc-type-traits.mm

@@ -53,16 +53,16 @@ TRAIT_IS_TRUE(__has_trivial_destructor, __autoreleasing id);
 TRAIT_IS_TRUE(__has_trivial_destructor, __unsafe_unretained id);
 
 // __is_literal
-TRAIT_IS_TRUE(__is_literal, __strong id);
-TRAIT_IS_TRUE(__is_literal, __weak id);
-TRAIT_IS_TRUE(__is_literal, __autoreleasing id);
-TRAIT_IS_TRUE(__is_literal, __unsafe_unretained id);
+TRAIT_IS_FALSE(__is_literal, __strong id);
+TRAIT_IS_FALSE(__is_literal, __weak id);
+TRAIT_IS_FALSE(__is_literal, __autoreleasing id);
+TRAIT_IS_FALSE(__is_literal, __unsafe_unretained id);
 
 // __is_literal_type
-TRAIT_IS_TRUE(__is_literal_type, __strong id);
-TRAIT_IS_TRUE(__is_literal_type, __weak id);
-TRAIT_IS_TRUE(__is_literal_type, __autoreleasing id);
-TRAIT_IS_TRUE(__is_literal_type, __unsafe_unretained id);
+TRAIT_IS_FALSE(__is_literal_type, __strong id);
+TRAIT_IS_FALSE(__is_literal_type, __weak id);
+TRAIT_IS_FALSE(__is_literal_type, __autoreleasing id);
+TRAIT_IS_FALSE(__is_literal_type, __unsafe_unretained id);
 
 // __is_pod
 TRAIT_IS_FALSE(__is_pod, __strong id);