Add comment for my patch in r166809.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166823 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 65ba91a6389b73c09b9e12128a47c4d124bf5dc5..9617de8eb7a1fde065b2a43b15adef265b2d90e8 100644 (file)
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -2583,6 +2583,8 @@ void CodeGenModule::EmitLinkageSpec(const LinkageSpecDecl *LSD) {
 
   for (RecordDecl::decl_iterator I = LSD->decls_begin(), E = LSD->decls_end();
        I != E; ++I) {
+    // Meta-data for ObjC class includes references to implemented methods.
+    // Generate class's method definitions first.
     if (ObjCImplDecl *OID = dyn_cast<ObjCImplDecl>(*I)) {
       for (ObjCContainerDecl::method_iterator M = OID->meth_begin(),
            MEnd = OID->meth_end();