Added support for "#pragma clang section relro=<name>"

Differential Revision: https://reviews.llvm.org/D68806

llvm-svn: 374934
diff --git a/clang/lib/CodeGen/CGDecl.cpp b/clang/lib/CodeGen/CGDecl.cpp
index 46ea9c3..563841c 100644
--- a/clang/lib/CodeGen/CGDecl.cpp
+++ b/clang/lib/CodeGen/CGDecl.cpp
@@ -419,6 +419,8 @@
     var->addAttribute("data-section", SA->getName());
   if (auto *SA = D.getAttr<PragmaClangRodataSectionAttr>())
     var->addAttribute("rodata-section", SA->getName());
+  if (auto *SA = D.getAttr<PragmaClangRelroSectionAttr>())
+    var->addAttribute("relro-section", SA->getName());
 
   if (const SectionAttr *SA = D.getAttr<SectionAttr>())
     var->setSection(SA->getName());