IRgen support for weak_import.
- <rdar://problem/6652110> clang should support weak_import
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66270 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 3f930fe..953413d 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -263,8 +263,12 @@
} else
GV->setLinkage(llvm::Function::DLLImportLinkage);
}
- } else if (D->getAttr<WeakAttr>())
+ } else if (D->getAttr<WeakAttr>() ||
+ D->getAttr<WeakImportAttr>()) {
+ // "extern_weak" is overloaded in LLVM; we probably should have
+ // separate linkage types for this.
GV->setLinkage(llvm::Function::ExternalWeakLinkage);
+ }
} else {
if (IsInternal) {
GV->setLinkage(llvm::Function::InternalLinkage);
@@ -276,7 +280,8 @@
GV->setLinkage(llvm::Function::DLLExportLinkage);
} else
GV->setLinkage(llvm::Function::DLLExportLinkage);
- } else if (D->getAttr<WeakAttr>() || IsInline)
+ } else if (D->getAttr<WeakAttr>() || D->getAttr<WeakImportAttr>() ||
+ IsInline)
GV->setLinkage(llvm::Function::WeakLinkage);
}
}
@@ -602,7 +607,7 @@
if (D->getStorageClass() == VarDecl::PrivateExtern)
setGlobalVisibility(GV, VisibilityAttr::HiddenVisibility);
- if (D->getAttr<WeakAttr>())
+ if (D->getAttr<WeakAttr>() || D->getAttr<WeakImportAttr>())
GV->setLinkage(llvm::GlobalValue::ExternalWeakLinkage);
if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) {
@@ -737,7 +742,7 @@
GV->setLinkage(llvm::Function::DLLImportLinkage);
else if (D->getAttr<DLLExportAttr>())
GV->setLinkage(llvm::Function::DLLExportLinkage);
- else if (D->getAttr<WeakAttr>())
+ else if (D->getAttr<WeakAttr>() || D->getAttr<WeakImportAttr>())
GV->setLinkage(llvm::GlobalVariable::WeakLinkage);
else {
// FIXME: This isn't right. This should handle common linkage and other