Author: dzobnin
Date: Wed May 25 06:32:42 2016
New Revision: 270686

URL: http://llvm.org/viewvc/llvm-project?rev=270686&view=rev
Log:
[ms][dll] #26935 Defining a dllimport function should cause it to be exported

If we have some function with dllimport attribute and then we have the function
definition in the same module but without dllimport attribute we should add
dllexport attribute to this function definition.
The same should be done for variables.

Example:
struct __declspec(dllimport) C3 {
  ~C3();
};
C3::~C3() {;} // we should export this definition.

Patch by Andrew V. Tischenko

Differential revision: http://reviews.llvm.org/D18953

Modified:
    cfe/trunk/include/clang/Basic/DiagnosticGroups.td
    cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
    cfe/trunk/lib/Sema/SemaDecl.cpp
    cfe/trunk/test/CodeGen/dllimport.c
    cfe/trunk/test/CodeGenCXX/dllimport-members.cpp
    cfe/trunk/test/CodeGenCXX/dllimport.cpp
    cfe/trunk/test/Sema/dllimport.c
    cfe/trunk/test/SemaCXX/dllimport.cpp

Modified: cfe/trunk/include/clang/Basic/DiagnosticGroups.td
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticGroups.td?rev=270686&r1=270685&r2=270686&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/DiagnosticGroups.td (original)
+++ cfe/trunk/include/clang/Basic/DiagnosticGroups.td Wed May 25 06:32:42 2016
@@ -772,6 +772,7 @@ def MicrosoftEnumValue : DiagGroup<"micr
 def MicrosoftDefaultArgRedefinition :
     DiagGroup<"microsoft-default-arg-redefinition">;
 def MicrosoftTemplate : DiagGroup<"microsoft-template">;
+def MicrosoftInconsistentDllImport : DiagGroup<"inconsistent-dllimport">;
 def MicrosoftRedeclareStatic : DiagGroup<"microsoft-redeclare-static">;
 def MicrosoftEnumForwardReference :
     DiagGroup<"microsoft-enum-forward-reference">;
@@ -798,7 +799,8 @@ def Microsoft : DiagGroup<"microsoft",
      MicrosoftRedeclareStatic, MicrosoftEnumForwardReference, MicrosoftGoto,
      MicrosoftFlexibleArray, MicrosoftExtraQualification, MicrosoftCast,
      MicrosoftConstInit, MicrosoftVoidPseudoDtor, MicrosoftAnonTag,
-     MicrosoftCommentPaste, MicrosoftEndOfFile]>;
+     MicrosoftCommentPaste, MicrosoftEndOfFile,
+     MicrosoftInconsistentDllImport]>;
 
 def ClangClPch : DiagGroup<"clang-cl-pch">;
 

Modified: cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td?rev=270686&r1=270685&r2=270686&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td (original)
+++ cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td Wed May 25 06:32:42 
2016
@@ -2359,7 +2359,10 @@ def err_attribute_aligned_too_great : Er
   "requested alignment must be %0 bytes or smaller">;
 def warn_redeclaration_without_attribute_prev_attribute_ignored : Warning<
   "%q0 redeclared without %1 attribute: previous %1 ignored">,
-  InGroup<DiagGroup<"inconsistent-dllimport">>;
+  InGroup<MicrosoftInconsistentDllImport>;
+def warn_redeclaration_without_import_attribute : Warning<
+  "%q0 redeclared without 'dllimport' attribute: 'dllexport' attribute added">,
+  InGroup<MicrosoftInconsistentDllImport>;
 def warn_dllimport_dropped_from_inline_function : Warning<
   "%q0 redeclared inline; %1 attribute ignored">,
   InGroup<IgnoredAttributes>;

Modified: cfe/trunk/lib/Sema/SemaDecl.cpp
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDecl.cpp?rev=270686&r1=270685&r2=270686&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaDecl.cpp (original)
+++ cfe/trunk/lib/Sema/SemaDecl.cpp Wed May 25 06:32:42 2016
@@ -5559,9 +5559,13 @@ static void checkAttributesAfterMerging(
 
 static void checkDLLAttributeRedeclaration(Sema &S, NamedDecl *OldDecl,
                                            NamedDecl *NewDecl,
-                                           bool IsSpecialization) {
-  if (TemplateDecl *OldTD = dyn_cast<TemplateDecl>(OldDecl))
+                                           bool IsSpecialization,
+                                           bool IsDefinition) {
+  if (TemplateDecl *OldTD = dyn_cast<TemplateDecl>(OldDecl)) {
     OldDecl = OldTD->getTemplatedDecl();
+    if (!IsSpecialization)
+      IsDefinition = false;
+  }
   if (TemplateDecl *NewTD = dyn_cast<TemplateDecl>(NewDecl))
     NewDecl = NewTD->getTemplatedDecl();
 
@@ -5617,14 +5621,17 @@ static void checkDLLAttributeRedeclarati
 
   // A redeclaration is not allowed to drop a dllimport attribute, the only
   // exceptions being inline function definitions, local extern declarations,
-  // and qualified friend declarations.
-  // NB: MSVC converts such a declaration to dllexport.
+  // qualified friend declarations or special MSVC extension: in the last case,
+  // the declaration is treated as if it were marked dllexport.
   bool IsInline = false, IsStaticDataMember = false, IsQualifiedFriend = false;
-  if (const auto *VD = dyn_cast<VarDecl>(NewDecl))
+  bool IsMicrosoft = S.Context.getTargetInfo().getCXXABI().isMicrosoft();
+  if (const auto *VD = dyn_cast<VarDecl>(NewDecl)) {
     // Ignore static data because out-of-line definitions are diagnosed
     // separately.
     IsStaticDataMember = VD->isStaticDataMember();
-  else if (const auto *FD = dyn_cast<FunctionDecl>(NewDecl)) {
+    IsDefinition = VD->isThisDeclarationADefinition(S.Context) !=
+                   VarDecl::DeclarationOnly;
+  } else if (const auto *FD = dyn_cast<FunctionDecl>(NewDecl)) {
     IsInline = FD->isInlined();
     IsQualifiedFriend = FD->getQualifier() &&
                         FD->getFriendObjectKind() == Decl::FOK_Declared;
@@ -5632,15 +5639,25 @@ static void checkDLLAttributeRedeclarati
 
   if (OldImportAttr && !HasNewAttr && !IsInline && !IsStaticDataMember &&
       !NewDecl->isLocalExternDecl() && !IsQualifiedFriend) {
-    S.Diag(NewDecl->getLocation(),
-           diag::warn_redeclaration_without_attribute_prev_attribute_ignored)
-      << NewDecl << OldImportAttr;
-    S.Diag(OldDecl->getLocation(), diag::note_previous_declaration);
-    S.Diag(OldImportAttr->getLocation(), diag::note_previous_attribute);
-    OldDecl->dropAttr<DLLImportAttr>();
-    NewDecl->dropAttr<DLLImportAttr>();
-  } else if (IsInline && OldImportAttr &&
-             !S.Context.getTargetInfo().getCXXABI().isMicrosoft()) {
+    if (IsMicrosoft && IsDefinition) {
+      S.Diag(NewDecl->getLocation(),
+             diag::warn_redeclaration_without_import_attribute)
+          << NewDecl;
+      S.Diag(OldDecl->getLocation(), diag::note_previous_declaration);
+      NewDecl->dropAttr<DLLImportAttr>();
+      NewDecl->addAttr(::new (S.Context) DLLExportAttr(
+          NewImportAttr->getRange(), S.Context,
+          NewImportAttr->getSpellingListIndex()));
+    } else {
+      S.Diag(NewDecl->getLocation(),
+             diag::warn_redeclaration_without_attribute_prev_attribute_ignored)
+          << NewDecl << OldImportAttr;
+      S.Diag(OldDecl->getLocation(), diag::note_previous_declaration);
+      S.Diag(OldImportAttr->getLocation(), diag::note_previous_attribute);
+      OldDecl->dropAttr<DLLImportAttr>();
+      NewDecl->dropAttr<DLLImportAttr>();
+    }
+  } else if (IsInline && OldImportAttr && !IsMicrosoft) {
     // In MinGW, seeing a function declared inline drops the dllimport 
attribute.
     OldDecl->dropAttr<DLLImportAttr>();
     NewDecl->dropAttr<DLLImportAttr>();
@@ -6424,7 +6441,7 @@ Sema::ActOnVariableDeclarator(Scope *S,
   if (D.isRedeclaration() && !Previous.empty()) {
     checkDLLAttributeRedeclaration(
         *this, dyn_cast<NamedDecl>(Previous.getRepresentativeDecl()), NewVD,
-        IsExplicitSpecialization);
+        IsExplicitSpecialization, D.isFunctionDefinition());
   }
 
   if (NewTemplate) {
@@ -8455,7 +8472,8 @@ Sema::ActOnFunctionDeclarator(Scope *S,
   if (D.isRedeclaration() && !Previous.empty()) {
     checkDLLAttributeRedeclaration(
         *this, dyn_cast<NamedDecl>(Previous.getRepresentativeDecl()), NewFD,
-        isExplicitSpecialization || isFunctionTemplateSpecialization);
+        isExplicitSpecialization || isFunctionTemplateSpecialization,
+        D.isFunctionDefinition());
   }
 
   if (getLangOpts().CUDA) {

Modified: cfe/trunk/test/CodeGen/dllimport.c
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/dllimport.c?rev=270686&r1=270685&r2=270686&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/dllimport.c (original)
+++ cfe/trunk/test/CodeGen/dllimport.c Wed May 25 06:32:42 2016
@@ -45,7 +45,8 @@ __declspec(dllimport) extern int GlobalR
 USEVAR(GlobalRedecl3)
 
 // Make sure this works even if the decl has been used before it's defined 
(PR20792).
-// CHECK: @GlobalRedecl4 = common global i32
+// MS: @GlobalRedecl4 = common dllexport global i32
+// GNU: @GlobalRedecl4 = common global i32
 __declspec(dllimport) extern int GlobalRedecl4;
 USEVAR(GlobalRedecl4)
                       int GlobalRedecl4; // dllimport ignored
@@ -111,13 +112,15 @@ __declspec(dllimport) void redecl2(void)
                       void redecl2(void);
 USE(redecl2)
 
-// CHECK-DAG: define void @redecl3()
+// MS: define dllexport void @redecl3()
+// GNU: define void @redecl3()
 __declspec(dllimport) void redecl3(void);
                       void redecl3(void) {} // dllimport ignored
 USE(redecl3)
 
 // Make sure this works even if the decl is used before it's defined (PR20792).
-// CHECK-DAG: define void @redecl4()
+// MS: define dllexport void @redecl4()
+// GNU: define void @redecl4()
 __declspec(dllimport) void redecl4(void);
 USE(redecl4)
                       void redecl4(void) {} // dllimport ignored

Modified: cfe/trunk/test/CodeGenCXX/dllimport-members.cpp
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/dllimport-members.cpp?rev=270686&r1=270685&r2=270686&view=diff
==============================================================================
--- cfe/trunk/test/CodeGenCXX/dllimport-members.cpp (original)
+++ cfe/trunk/test/CodeGenCXX/dllimport-members.cpp Wed May 25 06:32:42 2016
@@ -63,8 +63,8 @@ struct ForceNonTrivial {
 struct ImportMembers {
   struct Nested;
 
-  // M32-DAG: define              x86_thiscallcc void 
@"\01?normalDef@ImportMembers@@QAEXXZ"(%struct.ImportMembers* %this)
-  // M64-DAG: define                             void 
@"\01?normalDef@ImportMembers@@QEAAXXZ"(%struct.ImportMembers* %this)
+  // M32-DAG: define  dllexport   x86_thiscallcc void 
@"\01?normalDef@ImportMembers@@QAEXXZ"(%struct.ImportMembers* %this)
+  // M64-DAG: define  dllexport                  void 
@"\01?normalDef@ImportMembers@@QEAAXXZ"(%struct.ImportMembers* %this)
   // M32-DAG: declare dllimport   x86_thiscallcc void 
@"\01?normalDecl@ImportMembers@@QAEXXZ"(%struct.ImportMembers*)
   // M64-DAG: declare dllimport                  void 
@"\01?normalDecl@ImportMembers@@QEAAXXZ"(%struct.ImportMembers*)
   // M32-DAG: declare dllimport   x86_thiscallcc void 
@"\01?normalInclass@ImportMembers@@QAEXXZ"(%struct.ImportMembers*)
@@ -95,8 +95,8 @@ struct ImportMembers {
   __declspec(dllimport)                void normalInlineDef();
   __declspec(dllimport)         inline void normalInlineDecl();
 
-  // M32-DAG: define              x86_thiscallcc void 
@"\01?virtualDef@ImportMembers@@UAEXXZ"(%struct.ImportMembers* %this)
-  // M64-DAG: define                             void 
@"\01?virtualDef@ImportMembers@@UEAAXXZ"(%struct.ImportMembers* %this)
+  // M32-DAG: define  dllexport   x86_thiscallcc void 
@"\01?virtualDef@ImportMembers@@UAEXXZ"(%struct.ImportMembers* %this)
+  // M64-DAG: define  dllexport                  void 
@"\01?virtualDef@ImportMembers@@UEAAXXZ"(%struct.ImportMembers* %this)
   // M32-DAG: declare dllimport   x86_thiscallcc void 
@"\01?virtualDecl@ImportMembers@@UAEXXZ"(%struct.ImportMembers*)
   // M64-DAG: declare dllimport                  void 
@"\01?virtualDecl@ImportMembers@@UEAAXXZ"(%struct.ImportMembers*)
   // M32-DAG: declare dllimport   x86_thiscallcc void 
@"\01?virtualInclass@ImportMembers@@UAEXXZ"(%struct.ImportMembers*)
@@ -127,7 +127,7 @@ struct ImportMembers {
   __declspec(dllimport) virtual        void virtualInlineDef();
   __declspec(dllimport) virtual inline void virtualInlineDecl();
 
-  // MSC-DAG: define                           void 
@"\01?staticDef@ImportMembers@@SAXXZ"()
+  // MSC-DAG: define  dllexport                void 
@"\01?staticDef@ImportMembers@@SAXXZ"()
   // MSC-DAG: declare dllimport                void 
@"\01?staticDecl@ImportMembers@@SAXXZ"()
   // MSC-DAG: declare dllimport                void 
@"\01?staticInclass@ImportMembers@@SAXXZ"()
   // MSC-DAG: declare dllimport                void 
@"\01?staticInlineDef@ImportMembers@@SAXXZ"()
@@ -235,8 +235,8 @@ USEMV(ImportMembers, ConstexprField)
 
 // Import individual members of a nested class.
 struct ImportMembers::Nested {
-  // M32-DAG: define              x86_thiscallcc void 
@"\01?normalDef@Nested@ImportMembers@@QAEXXZ"(%"struct.ImportMembers::Nested"* 
%this)
-  // M64-DAG: define                             void 
@"\01?normalDef@Nested@ImportMembers@@QEAAXXZ"(%"struct.ImportMembers::Nested"* 
%this)
+  // M32-DAG: define  dllexport   x86_thiscallcc void 
@"\01?normalDef@Nested@ImportMembers@@QAEXXZ"(%"struct.ImportMembers::Nested"* 
%this)
+  // M64-DAG: define  dllexport                  void 
@"\01?normalDef@Nested@ImportMembers@@QEAAXXZ"(%"struct.ImportMembers::Nested"* 
%this)
   // M32-DAG: declare dllimport   x86_thiscallcc void 
@"\01?normalDecl@Nested@ImportMembers@@QAEXXZ"(%"struct.ImportMembers::Nested"*)
   // M64-DAG: declare dllimport                  void 
@"\01?normalDecl@Nested@ImportMembers@@QEAAXXZ"(%"struct.ImportMembers::Nested"*)
   // M32-DAG: declare dllimport   x86_thiscallcc void 
@"\01?normalInclass@Nested@ImportMembers@@QAEXXZ"(%"struct.ImportMembers::Nested"*)
@@ -267,8 +267,8 @@ struct ImportMembers::Nested {
   __declspec(dllimport)                void normalInlineDef();
   __declspec(dllimport)         inline void normalInlineDecl();
 
-  // M32-DAG: define              x86_thiscallcc void 
@"\01?virtualDef@Nested@ImportMembers@@UAEXXZ"(%"struct.ImportMembers::Nested"* 
%this)
-  // M64-DAG: define                             void 
@"\01?virtualDef@Nested@ImportMembers@@UEAAXXZ"(%"struct.ImportMembers::Nested"*
 %this)
+  // M32-DAG: define  dllexport   x86_thiscallcc void 
@"\01?virtualDef@Nested@ImportMembers@@UAEXXZ"(%"struct.ImportMembers::Nested"* 
%this)
+  // M64-DAG: define  dllexport                  void 
@"\01?virtualDef@Nested@ImportMembers@@UEAAXXZ"(%"struct.ImportMembers::Nested"*
 %this)
   // M32-DAG: declare dllimport   x86_thiscallcc void 
@"\01?virtualDecl@Nested@ImportMembers@@UAEXXZ"(%"struct.ImportMembers::Nested"*)
   // M64-DAG: declare dllimport                  void 
@"\01?virtualDecl@Nested@ImportMembers@@UEAAXXZ"(%"struct.ImportMembers::Nested"*)
   // M32-DAG: declare dllimport   x86_thiscallcc void 
@"\01?virtualInclass@Nested@ImportMembers@@UAEXXZ"(%"struct.ImportMembers::Nested"*)
@@ -300,7 +300,7 @@ struct ImportMembers::Nested {
   __declspec(dllimport) virtual        void virtualInlineDef();
   __declspec(dllimport) virtual inline void virtualInlineDecl();
 
-  // MSC-DAG: define                           void 
@"\01?staticDef@Nested@ImportMembers@@SAXXZ"()
+  // MSC-DAG: define  dllexport                void 
@"\01?staticDef@Nested@ImportMembers@@SAXXZ"()
   // MSC-DAG: declare dllimport                void 
@"\01?staticDecl@Nested@ImportMembers@@SAXXZ"()
   // MSC-DAG: declare dllimport                void 
@"\01?staticInclass@Nested@ImportMembers@@SAXXZ"()
   // MSC-DAG: declare dllimport                void 
@"\01?staticInlineDef@Nested@ImportMembers@@SAXXZ"()
@@ -595,16 +595,16 @@ inline ImportDefaultedDefs::ImportDefaul
 // G64-DAG: define linkonce_odr                dereferenceable({{[0-9]+}}) 
%struct.ImportDefaultedDefs* 
@_ZN19ImportDefaultedDefsaSERKS_(%struct.ImportDefaultedDefs* %this, 
%struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
 inline ImportDefaultedDefs& ImportDefaultedDefs::operator=(const 
ImportDefaultedDefs&) = default;
 
-// M32-DAG: define x86_thiscallcc %struct.ImportDefaultedDefs* 
@"\01??0ImportDefaultedDefs@@QAE@$$QAU0@@Z"(%struct.ImportDefaultedDefs* 
returned %this, %struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
-// M64-DAG: define                %struct.ImportDefaultedDefs* 
@"\01??0ImportDefaultedDefs@@QEAA@$$QEAU0@@Z"(%struct.ImportDefaultedDefs* 
returned %this, %struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
+// M32-DAG: define dllexport x86_thiscallcc %struct.ImportDefaultedDefs* 
@"\01??0ImportDefaultedDefs@@QAE@$$QAU0@@Z"(%struct.ImportDefaultedDefs* 
returned %this, %struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
+// M64-DAG: define dllexport                %struct.ImportDefaultedDefs* 
@"\01??0ImportDefaultedDefs@@QEAA@$$QEAU0@@Z"(%struct.ImportDefaultedDefs* 
returned %this, %struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
 // G32-DAG: define x86_thiscallcc void 
@_ZN19ImportDefaultedDefsC1EOS_(%struct.ImportDefaultedDefs* %this, 
%struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
 // G64-DAG: define                void 
@_ZN19ImportDefaultedDefsC1EOS_(%struct.ImportDefaultedDefs* %this, 
%struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
 // G32-DAG: define x86_thiscallcc void 
@_ZN19ImportDefaultedDefsC2EOS_(%struct.ImportDefaultedDefs* %this, 
%struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
 // G64-DAG: define                void 
@_ZN19ImportDefaultedDefsC2EOS_(%struct.ImportDefaultedDefs* %this, 
%struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
 ImportDefaultedDefs::ImportDefaultedDefs(ImportDefaultedDefs&&) = default; // 
dllimport ignored
 
-// M32-DAG: define x86_thiscallcc dereferenceable({{[0-9]+}}) 
%struct.ImportDefaultedDefs* 
@"\01??4ImportDefaultedDefs@@QAEAAU0@$$QAU0@@Z"(%struct.ImportDefaultedDefs* 
%this, %struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
-// M64-DAG: define                dereferenceable({{[0-9]+}}) 
%struct.ImportDefaultedDefs* 
@"\01??4ImportDefaultedDefs@@QEAAAEAU0@$$QEAU0@@Z"(%struct.ImportDefaultedDefs* 
%this, %struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
+// M32-DAG: define dllexport x86_thiscallcc dereferenceable({{[0-9]+}}) 
%struct.ImportDefaultedDefs* 
@"\01??4ImportDefaultedDefs@@QAEAAU0@$$QAU0@@Z"(%struct.ImportDefaultedDefs* 
%this, %struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
+// M64-DAG: define dllexport                dereferenceable({{[0-9]+}}) 
%struct.ImportDefaultedDefs* 
@"\01??4ImportDefaultedDefs@@QEAAAEAU0@$$QEAU0@@Z"(%struct.ImportDefaultedDefs* 
%this, %struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
 // G32-DAG: define x86_thiscallcc dereferenceable({{[0-9]+}}) 
%struct.ImportDefaultedDefs* 
@_ZN19ImportDefaultedDefsaSEOS_(%struct.ImportDefaultedDefs* %this, 
%struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
 // G64-DAG: define                dereferenceable({{[0-9]+}}) 
%struct.ImportDefaultedDefs* 
@_ZN19ImportDefaultedDefsaSEOS_(%struct.ImportDefaultedDefs* %this, 
%struct.ImportDefaultedDefs* dereferenceable({{[0-9]+}}))
 ImportDefaultedDefs& ImportDefaultedDefs::operator=(ImportDefaultedDefs&&) = 
default; // dllimport ignored

Modified: cfe/trunk/test/CodeGenCXX/dllimport.cpp
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/dllimport.cpp?rev=270686&r1=270685&r2=270686&view=diff
==============================================================================
--- cfe/trunk/test/CodeGenCXX/dllimport.cpp (original)
+++ cfe/trunk/test/CodeGenCXX/dllimport.cpp Wed May 25 06:32:42 2016
@@ -264,7 +264,7 @@ __declspec(dllimport) void redecl2();
                       void redecl2();
 USE(redecl2)
 
-// MSC-DAG: define void @"\01?redecl3@@YAXXZ"()
+// MSC-DAG: define dllexport void @"\01?redecl3@@YAXXZ"()
 // GNU-DAG: define void @_Z7redecl3v()
 __declspec(dllimport) void redecl3();
                       void redecl3() {} // dllimport ignored
@@ -276,7 +276,7 @@ USE(redecl3)
 // GNU-DAG: declare dllimport void @_Z7friend1v()
 // MSC-DAG: declare           void @"\01?friend2@@YAXXZ"()
 // GNU-DAG: declare           void @_Z7friend2v()
-// MSC-DAG: define            void @"\01?friend3@@YAXXZ"()
+// MSC-DAG: define  dllexport void @"\01?friend3@@YAXXZ"()
 // GNU-DAG: define            void @_Z7friend3v()
 // MSC-DAG: declare           void @"\01?friend4@@YAXXZ"()
 // GNU-DAG: declare           void @_Z7friend4v()

Modified: cfe/trunk/test/Sema/dllimport.c
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Sema/dllimport.c?rev=270686&r1=270685&r2=270686&view=diff
==============================================================================
--- cfe/trunk/test/Sema/dllimport.c (original)
+++ cfe/trunk/test/Sema/dllimport.c Wed May 25 06:32:42 2016
@@ -34,17 +34,49 @@ __declspec(dllimport) int GlobalInit1 =
 int __declspec(dllimport) GlobalInit2 = 1; // expected-error{{definition of 
dllimport data}}
 
 // Declare, then reject definition.
-__declspec(dllimport) extern int ExternGlobalDeclInit; // 
expected-note{{previous declaration is here}} expected-note{{previous attribute 
is here}}
-int ExternGlobalDeclInit = 1; // expected-warning{{'ExternGlobalDeclInit' 
redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+__declspec(dllimport) extern int ExternGlobalDeclInit; // 
expected-note{{previous declaration is here}}
+#ifdef MS
+// expected-warning@+4{{'ExternGlobalDeclInit' redeclared without 'dllimport' 
attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+2{{'ExternGlobalDeclInit' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#endif
+int ExternGlobalDeclInit = 1;
 
-__declspec(dllimport) int GlobalDeclInit; // expected-note{{previous 
declaration is here}} expected-note{{previous attribute is here}}
-int GlobalDeclInit = 1; // expected-warning{{'GlobalDeclInit' redeclared 
without 'dllimport' attribute: previous 'dllimport' ignored}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+__declspec(dllimport) int GlobalDeclInit; // expected-note{{previous 
declaration is here}}
+#ifdef MS
+// expected-warning@+4{{'GlobalDeclInit' redeclared without 'dllimport' 
attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+2{{'GlobalDeclInit' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#endif
+int GlobalDeclInit = 1;
 
-int *__attribute__((dllimport)) GlobalDeclChunkAttrInit; // 
expected-note{{previous declaration is here}} expected-note{{previous attribute 
is here}}
-int *GlobalDeclChunkAttrInit = 0; // 
expected-warning{{'GlobalDeclChunkAttrInit' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+int *__attribute__((dllimport)) GlobalDeclChunkAttrInit; // 
expected-note{{previous declaration is here}}
+#ifdef MS
+// expected-warning@+4{{'GlobalDeclChunkAttrInit' redeclared without 
'dllimport' attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+2{{'GlobalDeclChunkAttrInit' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
+int *GlobalDeclChunkAttrInit = 0;
 
-int GlobalDeclAttrInit __attribute__((dllimport)); // expected-note{{previous 
declaration is here}} expected-note{{previous attribute is here}}
-int GlobalDeclAttrInit = 1; // expected-warning{{'GlobalDeclAttrInit' 
redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+int GlobalDeclAttrInit __attribute__((dllimport)); // expected-note{{previous 
declaration is here}}
+#ifdef MS
+// expected-warning@+4{{'GlobalDeclAttrInit' redeclared without 'dllimport' 
attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+2{{'GlobalDeclAttrInit' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#endif
+int GlobalDeclAttrInit = 1;
 
 // Redeclarations
 __declspec(dllimport) extern int GlobalRedecl1;
@@ -59,8 +91,7 @@ int *__attribute__((dllimport)) GlobalRe
 int GlobalRedecl2c __attribute__((dllimport));
 int GlobalRedecl2c __attribute__((dllimport));
 
-// NB: MSVC issues a warning and makes GlobalRedecl3 dllexport. We follow GCC
-// and drop the dllimport with a warning.
+// We follow GCC and drop the dllimport with a warning.
 __declspec(dllimport) extern int GlobalRedecl3; // expected-note{{previous 
declaration is here}} expected-note{{previous attribute is here}}
                       extern int GlobalRedecl3; // 
expected-warning{{'GlobalRedecl3' redeclared without 'dllimport' attribute: 
previous 'dllimport' ignored}}
 
@@ -133,13 +164,20 @@ inline void __attribute__((dllimport)) i
 __declspec(dllimport) void redecl1();
 __declspec(dllimport) void redecl1();
 
-// NB: MSVC issues a warning and makes redecl2/redecl3 dllexport. We follow GCC
-// and drop the dllimport with a warning.
 __declspec(dllimport) void redecl2(); // expected-note{{previous declaration 
is here}} expected-note{{previous attribute is here}}
                       void redecl2(); // expected-warning{{'redecl2' 
redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
 
-__declspec(dllimport) void redecl3(); // expected-note{{previous declaration 
is here}} expected-note{{previous attribute is here}}
-                      void redecl3() {} // expected-warning{{'redecl3' 
redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
+#ifdef GNU
+                      // expected-note@+2{{previous attribute is here}}
+#endif
+                      __declspec(dllimport) void redecl3(); // 
expected-note{{previous declaration is here}}
+                      // NB: Both MSVC and Clang issue a warning and make 
redecl3 dllexport.
+#ifdef MS
+                      // expected-warning@+4{{'redecl3' redeclared without 
'dllimport' attribute: 'dllexport' attribute added}}
+#else
+                      // expected-warning@+2{{'redecl3' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
+                      void redecl3() {}
 
                       void redecl4(); // expected-note{{previous declaration 
is here}}
 void useRedecl4() { redecl4(); }

Modified: cfe/trunk/test/SemaCXX/dllimport.cpp
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaCXX/dllimport.cpp?rev=270686&r1=270685&r2=270686&view=diff
==============================================================================
--- cfe/trunk/test/SemaCXX/dllimport.cpp (original)
+++ cfe/trunk/test/SemaCXX/dllimport.cpp Wed May 25 06:32:42 2016
@@ -44,17 +44,49 @@ __declspec(dllimport) int GlobalInit1 =
 int __declspec(dllimport) GlobalInit2 = 1; // expected-error{{definition of 
dllimport data}}
 
 // Declare, then reject definition.
-__declspec(dllimport) extern int ExternGlobalDeclInit; // 
expected-note{{previous declaration is here}} expected-note{{previous attribute 
is here}}
-int ExternGlobalDeclInit = 1; // expected-warning{{'ExternGlobalDeclInit' 
redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+__declspec(dllimport) extern int ExternGlobalDeclInit; // 
expected-note{{previous declaration is here}}
+#ifdef MS
+// expected-warning@+4{{'ExternGlobalDeclInit' redeclared without 'dllimport' 
attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+2{{'ExternGlobalDeclInit' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#endif
+int ExternGlobalDeclInit = 1;
 
-__declspec(dllimport) int GlobalDeclInit; // expected-note{{previous 
declaration is here}} expected-note{{previous attribute is here}}
-int GlobalDeclInit = 1; // expected-warning{{'GlobalDeclInit' redeclared 
without 'dllimport' attribute: previous 'dllimport' ignored}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+__declspec(dllimport) int GlobalDeclInit; // expected-note{{previous 
declaration is here}}
+#ifdef MS
+// expected-warning@+4{{'GlobalDeclInit' redeclared without 'dllimport' 
attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+2{{'GlobalDeclInit' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#endif
+int GlobalDeclInit = 1;
 
-int *__attribute__((dllimport)) GlobalDeclChunkAttrInit; // 
expected-note{{previous declaration is here}} expected-note{{previous attribute 
is here}}
-int *GlobalDeclChunkAttrInit = 0; // 
expected-warning{{'GlobalDeclChunkAttrInit' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+int *__attribute__((dllimport)) GlobalDeclChunkAttrInit; // 
expected-note{{previous declaration is here}}
+#ifdef MS
+// expected-warning@+4{{'GlobalDeclChunkAttrInit' redeclared without 
'dllimport' attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+2{{'GlobalDeclChunkAttrInit' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
+int *GlobalDeclChunkAttrInit = 0;
 
-int GlobalDeclAttrInit __attribute__((dllimport)); // expected-note{{previous 
declaration is here}} expected-note{{previous attribute is here}}
-int GlobalDeclAttrInit = 1; // expected-warning{{'GlobalDeclAttrInit' 
redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+int GlobalDeclAttrInit __attribute__((dllimport)); // expected-note{{previous 
declaration is here}}
+#ifdef MS
+// expected-warning@+4{{'GlobalDeclAttrInit' redeclared without 'dllimport' 
attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+2{{'GlobalDeclAttrInit' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#endif
+int GlobalDeclAttrInit = 1;
 
 // Redeclarations
 __declspec(dllimport) extern int GlobalRedecl1;
@@ -69,8 +101,6 @@ int *__attribute__((dllimport)) GlobalRe
 int GlobalRedecl2c __attribute__((dllimport));
 int GlobalRedecl2c __attribute__((dllimport));
 
-// NB: MSVC issues a warning and makes GlobalRedecl3 dllexport. We follow GCC
-// and drop the dllimport with a warning.
 __declspec(dllimport) extern int GlobalRedecl3; // expected-note{{previous 
declaration is here}} expected-note{{previous attribute is here}}
                       extern int GlobalRedecl3; // 
expected-warning{{'GlobalRedecl3' redeclared without 'dllimport' attribute: 
previous 'dllimport' ignored}}
 
@@ -135,11 +165,31 @@ template<typename T> __declspec(dllimpor
 template<typename T> int __declspec(dllimport) VarTmplInit2 = 1; // 
expected-error{{definition of dllimport data}}
 
 // Declare, then reject definition.
-template<typename T> __declspec(dllimport) extern int ExternVarTmplDeclInit; 
// expected-note{{previous declaration is here}} expected-note{{previous 
attribute is here}}
-template<typename T>                              int ExternVarTmplDeclInit = 
1; // expected-warning{{'ExternVarTmplDeclInit' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#ifdef GNU
+// expected-note@+3{{previous attribute is here}}
+#endif
+template <typename T>
+__declspec(dllimport) extern int ExternVarTmplDeclInit; // 
expected-note{{previous declaration is here}}
+#ifdef MS
+// expected-warning@+5{{'ExternVarTmplDeclInit' redeclared without 'dllimport' 
attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+3{{'ExternVarTmplDeclInit' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#endif
+template <typename T>
+int ExternVarTmplDeclInit = 1;
 
-template<typename T> __declspec(dllimport) int VarTmplDeclInit; // 
expected-note{{previous declaration is here}} expected-note{{previous attribute 
is here}}
-template<typename T>                       int VarTmplDeclInit = 1; // 
expected-warning{{'VarTmplDeclInit' redeclared without 'dllimport' attribute: 
previous 'dllimport' ignored}}
+#ifdef GNU
+// expected-note@+3{{previous attribute is here}}
+#endif
+template <typename T>
+__declspec(dllimport) int VarTmplDeclInit; // expected-note{{previous 
declaration is here}}
+#ifdef MS
+// expected-warning@+5{{'VarTmplDeclInit' redeclared without 'dllimport' 
attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+3{{'VarTmplDeclInit' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#endif
+template <typename T>
+int VarTmplDeclInit = 1;
 
 // Redeclarations
 template<typename T> __declspec(dllimport) extern int VarTmplRedecl1;
@@ -238,13 +288,20 @@ __declspec(dllimport) void inlineDef();
 __declspec(dllimport) void redecl1();
 __declspec(dllimport) void redecl1();
 
-// NB: MSVC issues a warning and makes redecl2/redecl3 dllexport. We follow GCC
-// and drop the dllimport with a warning.
 __declspec(dllimport) void redecl2(); // expected-note{{previous declaration 
is here}} expected-note{{previous attribute is here}}
                       void redecl2(); // expected-warning{{'redecl2' 
redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
 
-__declspec(dllimport) void redecl3(); // expected-note{{previous declaration 
is here}} expected-note{{previous attribute is here}}
-                      void redecl3() {} // expected-warning{{'redecl3' 
redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
+#ifdef GNU
+                      // expected-note@+2{{previous attribute is here}}
+#endif
+                      __declspec(dllimport) void redecl3(); // 
expected-note{{previous declaration is here}}
+                      // NB: Both MSVC and Clang issue a warning and make 
redecl3 dllexport.
+#ifdef MS
+                      // expected-warning@+4{{'redecl3' redeclared without 
'dllimport' attribute: 'dllexport' attribute added}}
+#else
+                      // expected-warning@+2{{'redecl3' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
+                      void redecl3() {}
 
                       void redecl4(); // expected-note{{previous declaration 
is here}}
 __declspec(dllimport) void redecl4(); // expected-warning{{redeclaration of 
'redecl4' should not add 'dllimport' attribute}}
@@ -266,7 +323,10 @@ __declspec(dllimport) inline void redecl
 struct FuncFriend {
   friend __declspec(dllimport) void friend1();
   friend __declspec(dllimport) void friend2(); // expected-note{{previous 
declaration is here}} expected-note{{previous attribute is here}}
-  friend __declspec(dllimport) void friend3(); // expected-note{{previous 
declaration is here}} expected-note{{previous attribute is here}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+  friend __declspec(dllimport) void friend3(); // expected-note{{previous 
declaration is here}}
   friend                       void friend4(); // expected-note{{previous 
declaration is here}}
 #ifdef MS
 // expected-note@+2{{previous declaration is here}}
@@ -275,7 +335,12 @@ struct FuncFriend {
 };
 __declspec(dllimport) void friend1();
                       void friend2(); // expected-warning{{'friend2' 
redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
-                      void friend3() {} // expected-warning{{'friend3' 
redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
+#ifdef MS
+                      // expected-warning@+4{{'friend3' redeclared without 
'dllimport' attribute: 'dllexport' attribute added}}
+#else
+                      // expected-warning@+2{{'friend3' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
+                      void friend3() {}
 __declspec(dllimport) void friend4(); // expected-warning{{redeclaration of 
'friend4' should not add 'dllimport' attribute}}
 #ifdef MS
 __declspec(dllimport) inline void friend5() {} // 
expected-warning{{redeclaration of 'friend5' should not add 'dllimport' 
attribute}}
@@ -447,33 +512,39 @@ template<> __declspec(dllimport) inline
 struct ImportMembers {
   struct Nested {
     __declspec(dllimport) void normalDecl();
-    __declspec(dllimport) void normalDef(); // expected-note{{previous 
declaration is here}} expected-note{{previous attribute is here}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+    __declspec(dllimport) void normalDef(); // expected-note{{previous 
declaration is here}}
   };
 
 #ifdef GNU
+// expected-note@+5{{previous attribute is here}}
 // expected-warning@+5{{'dllimport' attribute ignored on inline function}}
 // expected-warning@+6{{'dllimport' attribute ignored on inline function}}
 #endif
   __declspec(dllimport)                void normalDecl();
-  __declspec(dllimport)                void normalDef(); // 
expected-note{{previous declaration is here}} expected-note{{previous attribute 
is here}}
+  __declspec(dllimport) void normalDef(); // expected-note{{previous 
declaration is here}}
   __declspec(dllimport)                void normalInclass() {}
   __declspec(dllimport)                void normalInlineDef();
   __declspec(dllimport)         inline void normalInlineDecl();
 #ifdef GNU
+// expected-note@+5{{previous attribute is here}}
 // expected-warning@+5{{'dllimport' attribute ignored on inline function}}
 // expected-warning@+6{{'dllimport' attribute ignored on inline function}}
 #endif
   __declspec(dllimport) virtual        void virtualDecl();
-  __declspec(dllimport) virtual        void virtualDef(); // 
expected-note{{previous declaration is here}} expected-note{{previous attribute 
is here}}
+  __declspec(dllimport) virtual void virtualDef(); // expected-note{{previous 
declaration is here}}
   __declspec(dllimport) virtual        void virtualInclass() {}
   __declspec(dllimport) virtual        void virtualInlineDef();
   __declspec(dllimport) virtual inline void virtualInlineDecl();
 #ifdef GNU
+// expected-note@+5{{previous attribute is here}}
 // expected-warning@+5{{'dllimport' attribute ignored on inline function}}
 // expected-warning@+6{{'dllimport' attribute ignored on inline function}}
 #endif
   __declspec(dllimport) static         void staticDecl();
-  __declspec(dllimport) static         void staticDef(); // 
expected-note{{previous declaration is here}} expected-note{{previous attribute 
is here}}
+  __declspec(dllimport) static void staticDef(); // expected-note{{previous 
declaration is here}}
   __declspec(dllimport) static         void staticInclass() {}
   __declspec(dllimport) static         void staticInlineDef();
   __declspec(dllimport) static  inline void staticInlineDecl();
@@ -495,20 +566,40 @@ public:
   __declspec(dllimport) constexpr static int ConstexprFieldDef = 1; // 
expected-note{{attribute is here}}
 };
 
-       void ImportMembers::Nested::normalDef() {} // 
expected-warning{{'ImportMembers::Nested::normalDef' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
-       void ImportMembers::normalDef() {} // 
expected-warning{{'ImportMembers::normalDef' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#ifdef MS
+// expected-warning@+4{{'ImportMembers::Nested::normalDef' redeclared without 
'dllimport' attribute: 'dllexport' attribute added}}
+#else
+                                                                               
  // expected-warning@+2{{'ImportMembers::Nested::normalDef' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
+void ImportMembers::Nested::normalDef() {}
+#ifdef MS
+// expected-warning@+4{{'ImportMembers::normalDef' redeclared without 
'dllimport' attribute: 'dllexport' attribute added}}
+#else
+                                                                               
  // expected-warning@+2{{'ImportMembers::normalDef' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
+void ImportMembers::normalDef() {}
 #ifdef GNU
 // expected-warning@+2{{'ImportMembers::normalInlineDef' redeclared inline; 
'dllimport' attribute ignored}}
 #endif
 inline void ImportMembers::normalInlineDef() {}
        void ImportMembers::normalInlineDecl() {}
-       void ImportMembers::virtualDef() {} // 
expected-warning{{'ImportMembers::virtualDef' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#ifdef MS
+       // expected-warning@+4{{'ImportMembers::virtualDef' redeclared without 
'dllimport' attribute: 'dllexport' attribute added}}
+#else
+                                                                               
  // expected-warning@+2{{'ImportMembers::virtualDef' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
+       void ImportMembers::virtualDef() {}
 #ifdef GNU
 // expected-warning@+2{{'ImportMembers::virtualInlineDef' redeclared inline; 
'dllimport' attribute ignored}}
 #endif
 inline void ImportMembers::virtualInlineDef() {}
        void ImportMembers::virtualInlineDecl() {}
-       void ImportMembers::staticDef() {} // 
expected-warning{{'ImportMembers::staticDef' redeclared without 'dllimport' 
attribute: previous 'dllimport' ignored}}
+#ifdef MS
+       // expected-warning@+4{{'ImportMembers::staticDef' redeclared without 
'dllimport' attribute: 'dllexport' attribute added}}
+#else
+                                                                               
  // expected-warning@+2{{'ImportMembers::staticDef' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
+       void ImportMembers::staticDef() {}
 #ifdef GNU
 // expected-warning@+2{{'ImportMembers::staticInlineDef' redeclared inline; 
'dllimport' attribute ignored}}
 #endif
@@ -620,7 +711,10 @@ struct ImportDefaulted {
 // Import defaulted member function definitions.
 struct ImportDefaultedDefs {
   __declspec(dllimport) ImportDefaultedDefs();
-  __declspec(dllimport) ~ImportDefaultedDefs(); // expected-note{{previous 
declaration is here}} expected-note{{previous attribute is here}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+  __declspec(dllimport) ~ImportDefaultedDefs(); // expected-note{{previous 
declaration is here}}
 
 #ifdef GNU
 // expected-warning@+3{{'dllimport' attribute ignored on inline function}}
@@ -630,14 +724,22 @@ struct ImportDefaultedDefs {
   __declspec(dllimport) ImportDefaultedDefs& operator=(const 
ImportDefaultedDefs&);
 
   __declspec(dllimport) ImportDefaultedDefs(ImportDefaultedDefs&&);
-  __declspec(dllimport) ImportDefaultedDefs& operator=(ImportDefaultedDefs&&); 
// expected-note{{previous declaration is here}} expected-note{{previous 
attribute is here}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+  __declspec(dllimport) ImportDefaultedDefs &operator=(ImportDefaultedDefs 
&&); // expected-note{{previous declaration is here}}
 };
 
 // Not allowed on definitions.
 __declspec(dllimport) ImportDefaultedDefs::ImportDefaultedDefs() = default; // 
expected-error{{dllimport cannot be applied to non-inline function definition}}
 
+#ifdef MS
+// expected-warning@+5{{'ImportDefaultedDefs::~ImportDefaultedDefs' redeclared 
without 'dllimport' attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+3{{'ImportDefaultedDefs::~ImportDefaultedDefs' redeclared 
without 'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
 // dllimport cannot be dropped.
-ImportDefaultedDefs::~ImportDefaultedDefs() = default; // 
expected-warning{{'ImportDefaultedDefs::~ImportDefaultedDefs' redeclared 
without 'dllimport' attribute: previous 'dllimport' ignored}}
+ImportDefaultedDefs::~ImportDefaultedDefs() = default;
 
 // Import inline declaration and definition.
 #ifdef GNU
@@ -648,8 +750,12 @@ __declspec(dllimport) ImportDefaultedDef
 inline ImportDefaultedDefs& ImportDefaultedDefs::operator=(const 
ImportDefaultedDefs&) = default;
 
 __declspec(dllimport) 
ImportDefaultedDefs::ImportDefaultedDefs(ImportDefaultedDefs&&) = default; // 
expected-error{{dllimport cannot be applied to non-inline function definition}}
-ImportDefaultedDefs& ImportDefaultedDefs::operator=(ImportDefaultedDefs&&) = 
default; // expected-warning{{'ImportDefaultedDefs::operator=' redeclared 
without 'dllimport' attribute: previous 'dllimport' ignored}}
-
+#ifdef MS
+// expected-warning@+4{{'ImportDefaultedDefs::operator=' redeclared without 
'dllimport' attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+2{{'ImportDefaultedDefs::operator=' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
+ImportDefaultedDefs &ImportDefaultedDefs::operator=(ImportDefaultedDefs &&) = 
default;
 
 // Redeclarations cannot add dllimport.
 struct MemberRedecl {
@@ -970,13 +1076,22 @@ template<> __declspec(dllimport) const i
 template<typename T>
 struct ImportClassTmplMembers {
   __declspec(dllimport)                void normalDecl();
-  __declspec(dllimport)                void normalDef(); // 
expected-note{{previous declaration is here}} expected-note{{previous attribute 
is here}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+  __declspec(dllimport) void normalDef(); // expected-note{{previous 
declaration is here}}
   __declspec(dllimport)                void normalInlineDef();
   __declspec(dllimport) virtual        void virtualDecl();
-  __declspec(dllimport) virtual        void virtualDef(); // 
expected-note{{previous declaration is here}} expected-note{{previous attribute 
is here}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+  __declspec(dllimport) virtual void virtualDef(); // expected-note{{previous 
declaration is here}}
   __declspec(dllimport) virtual        void virtualInlineDef();
   __declspec(dllimport) static         void staticDecl();
-  __declspec(dllimport) static         void staticDef(); // 
expected-note{{previous declaration is here}} expected-note{{previous attribute 
is here}}
+#ifdef GNU
+// expected-note@+2{{previous attribute is here}}
+#endif
+  __declspec(dllimport) static void staticDef(); // expected-note{{previous 
declaration is here}}
   __declspec(dllimport) static         void staticInlineDef();
 
 #ifdef GNU
@@ -1013,19 +1128,37 @@ public:
 
 // NB: MSVC is inconsistent here and disallows *InlineDef on class templates,
 // but allows it on classes. We allow both.
-template<typename T>        void ImportClassTmplMembers<T>::normalDef() {} // 
expected-warning{{'ImportClassTmplMembers::normalDef' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#ifdef MS
+// expected-warning@+5{{'ImportClassTmplMembers::normalDef' redeclared without 
'dllimport' attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+3{{'ImportClassTmplMembers::normalDef' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
+template <typename T>
+void ImportClassTmplMembers<T>::normalDef() {}
 #ifdef GNU
 // expected-warning@+2{{'ImportClassTmplMembers::normalInlineDef' redeclared 
inline; 'dllimport' attribute ignored}}
 #endif
 template<typename T> inline void ImportClassTmplMembers<T>::normalInlineDef() 
{}
 template<typename T>        void ImportClassTmplMembers<T>::normalInlineDecl() 
{}
-template<typename T>        void ImportClassTmplMembers<T>::virtualDef() {} // 
expected-warning{{'ImportClassTmplMembers::virtualDef' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#ifdef MS
+// expected-warning@+5{{'ImportClassTmplMembers::virtualDef' redeclared 
without 'dllimport' attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+3{{'ImportClassTmplMembers::virtualDef' redeclared 
without 'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
+template <typename T>
+void ImportClassTmplMembers<T>::virtualDef() {}
 #ifdef GNU
 // expected-warning@+2{{'ImportClassTmplMembers::virtualInlineDef' redeclared 
inline; 'dllimport' attribute ignored}}
 #endif
 template<typename T> inline void ImportClassTmplMembers<T>::virtualInlineDef() 
{}
 template<typename T>        void 
ImportClassTmplMembers<T>::virtualInlineDecl() {}
-template<typename T>        void ImportClassTmplMembers<T>::staticDef() {} // 
expected-warning{{'ImportClassTmplMembers::staticDef' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#ifdef MS
+// expected-warning@+5{{'ImportClassTmplMembers::staticDef' redeclared without 
'dllimport' attribute: 'dllexport' attribute added}}
+#else
+// expected-warning@+3{{'ImportClassTmplMembers::staticDef' redeclared without 
'dllimport' attribute: previous 'dllimport' ignored}}
+#endif
+template <typename T>
+void ImportClassTmplMembers<T>::staticDef() {}
 #ifdef GNU
 // expected-warning@+2{{'ImportClassTmplMembers::staticInlineDef' redeclared 
inline; 'dllimport' attribute ignored}}
 #endif


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