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IRGen: Do not set dllexport on declarations. 

Setting dllexport on a declaration has no effect, as we do not emit export
directives for declarations.

Part of the fix for PR32334.

Differential Revision: https://reviews.llvm.org/D31162

llvm-svn: 298330
This commit is contained in:
Peter Collingbourne 2017-03-21 02:02:41 +00:00
parent c12716e742
commit dc205b3db2
2 changed files with 3 additions and 4 deletions
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1
clang/lib/CodeGen/CodeGenModule.cpp
View File

@ -1036,7 +1036,6 @@ static void setLinkageAndVisibilityForGV(llvm::GlobalValue *GV,
GV->setDLLStorageClass(llvm::GlobalValue::DLLImportStorageClass);
} else if (ND->hasAttr<DLLExportAttr>()) {
GV->setLinkage(llvm::GlobalValue::ExternalLinkage);
GV->setDLLStorageClass(llvm::GlobalValue::DLLExportStorageClass);
} else if (ND->hasAttr<WeakAttr>() || ND->isWeakImported()) {
// "extern_weak" is overloaded in LLVM; we probably should have
// separate linkage types for this.

6
clang/test/CodeGenCXX/dllexport.cpp
View File

@ -108,8 +108,8 @@ inline int __declspec(dllexport) inlineStaticLocalsFunc() {
template<typename T> __declspec(dllexport) int VarTmplDef;
INSTVAR(VarTmplDef<ExplicitInst_Exported>)
// MSC-DAG: @"\01??$VarTmplImplicitDef@UImplicitInst_Exported@@@@3HA" = external dllexport global
// GNU-DAG: @_Z18VarTmplImplicitDefI21ImplicitInst_ExportedE = external dllexport global
// MSC-DAG: @"\01??$VarTmplImplicitDef@UImplicitInst_Exported@@@@3HA" = external global
// GNU-DAG: @_Z18VarTmplImplicitDefI21ImplicitInst_ExportedE = external global
template<typename T> __declspec(dllexport) int VarTmplImplicitDef;
USEVAR(VarTmplImplicitDef<ImplicitInst_Exported>)
@ -528,7 +528,7 @@ struct __declspec(dllexport) T {
// M32-DAG: define weak_odr dllexport x86_thiscallcc void @"\01?a@T@@QAEXXZ"
static int b;
// M32-DAG: @"\01?b@T@@2HA" = external dllexport global i32
// M32-DAG: @"\01?b@T@@2HA" = external global i32
static int c;
// M32-DAG: @"\01?c@T@@2HA" = dllexport global i32 0, align 4