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IRgen support for weak_import.

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- <rdar://problem/6652110> clang should support weak_import

llvm-svn: 66270
This commit is contained in:
Daniel Dunbar
2009-03-06 16:20:49 +00:00
parent 0658cac532
commit 8e79b8491f
2 changed files with 19 additions and 4 deletions
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13
clang/lib/CodeGen/CodeGenModule.cpp
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@@ -263,8 +263,12 @@ void CodeGenModule::SetGlobalValueAttributes(const Decl *D,
} 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 @@ void CodeGenModule::SetGlobalValueAttributes(const Decl *D,
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 @@ void CodeGenModule::EmitGlobalDefinition(const ValueDecl *D) {
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 @@ void CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D) {
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