[GCC] Attribute ifunc support in clang
This patch add support for GCC attribute((ifunc("resolver"))) for
targets that use ELF as object file format. In general ifunc is a
special kind of function alias with type @gnu_indirect_function. LLVM
patch http://reviews.llvm.org/D15525
Differential Revision: http://reviews.llvm.org/D15524
llvm-svn: 265917
diff --git a/clang/lib/AST/DeclBase.cpp b/clang/lib/AST/DeclBase.cpp
index 2722b82..57149af 100644
--- a/clang/lib/AST/DeclBase.cpp
+++ b/clang/lib/AST/DeclBase.cpp
@@ -362,6 +362,18 @@
return false;
}
+bool Decl::hasDefiningAttr() const {
+ return hasAttr<AliasAttr>() || hasAttr<IFuncAttr>();
+}
+
+const Attr *Decl::getDefiningAttr() const {
+ if (AliasAttr *AA = getAttr<AliasAttr>())
+ return AA;
+ if (IFuncAttr *IFA = getAttr<IFuncAttr>())
+ return IFA;
+ return nullptr;
+}
+
/// \brief Determine the availability of the given declaration based on
/// the target platform.
///