5 files changed, 28 insertions, 7 deletions
diff --git a/clang/lib/AST/AttrImpl.cpp b/clang/lib/AST/AttrImpl.cpp
index d81979734b3..dd6e3564a50 100644
--- a/clang/lib/AST/AttrImpl.cpp
+++ b/clang/lib/AST/AttrImpl.cpp
@@ -139,6 +139,10 @@ Attr *IBOutletAttr::clone(ASTContext &C) const {
   return ::new (C) IBOutletAttr;
 }
 
+Attr *IBActionAttr::clone(ASTContext &C) const {
+  return ::new (C) IBActionAttr;
+}
+
 Attr *GNUInlineAttr::clone(ASTContext &C) const {
   return ::new (C) GNUInlineAttr;
 }
diff --git a/clang/lib/Frontend/PCHReaderDecl.cpp b/clang/lib/Frontend/PCHReaderDecl.cpp
index 625997cac23..f47a60f2607 100644
--- a/clang/lib/Frontend/PCHReaderDecl.cpp
+++ b/clang/lib/Frontend/PCHReaderDecl.cpp
@@ -517,6 +517,10 @@ Attr *PCHReader::ReadAttributes() {
     SIMPLE_ATTR(GNUInline);
     SIMPLE_ATTR(Hiding);
 
+    case Attr::IBActionKind:
+      New = ::new (*Context) IBActionAttr();
+      break;
+
     case Attr::IBOutletKind:
       New = ::new (*Context) IBOutletAttr();
       break;
diff --git a/clang/lib/Frontend/PCHWriter.cpp b/clang/lib/Frontend/PCHWriter.cpp
index 4c99dbe2450..bd6463128bc 100644
--- a/clang/lib/Frontend/PCHWriter.cpp
+++ b/clang/lib/Frontend/PCHWriter.cpp
@@ -1853,6 +1853,7 @@ void PCHWriter::WriteAttributeRecord(const Attr *Attr) {
     case Attr::GNUInline:
     case Attr::Hiding:
     case Attr::IBOutletKind:
+    case Attr::IBActionKind:
     case Attr::Malloc:
     case Attr::NoDebug:
     case Attr::NoReturn:
diff --git a/clang/lib/Parse/AttributeList.cpp b/clang/lib/Parse/AttributeList.cpp
index df48e3a7861..2321f1acb9d 100644
--- a/clang/lib/Parse/AttributeList.cpp
+++ b/clang/lib/Parse/AttributeList.cpp
@@ -82,6 +82,7 @@ AttributeList::Kind AttributeList::getKind(const IdentifierInfo *Name) {
     .Case("stdcall", AT_stdcall)
     .Case("annotate", AT_annotate)
     .Case("fastcall", AT_fastcall)
+    .Case("ibaction", AT_IBAction)
     .Case("iboutlet", AT_IBOutlet)
     .Case("noreturn", AT_noreturn)
     .Case("noinline", AT_noinline)
diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index 02b2aa21b73..e0943274dac 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -225,19 +225,29 @@ static void HandlePackedAttr(Decl *d, const AttributeList &Attr, Sema &S) {
     S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName();
 }
 
-static void HandleIBOutletAttr(Decl *d, const AttributeList &Attr, Sema &S) {
+static void HandleIBAttr(Decl *d, const AttributeList &Attr, Sema &S) {
   // check the attribute arguments.
   if (Attr.getNumArgs() > 0) {
     S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
     return;
   }
 
-  // The IBOutlet attribute only applies to instance variables of Objective-C
-  // classes.
-  if (isa<ObjCIvarDecl>(d) || isa<ObjCPropertyDecl>(d))
-    d->addAttr(::new (S.Context) IBOutletAttr());
+  // The IBOutlet/IBAction attributes only apply to instance variables of
+  // Objective-C classes.
+  if (isa<ObjCIvarDecl>(d) || isa<ObjCPropertyDecl>(d)) {
+    switch (Attr.getKind()) {
+      case AttributeList::AT_IBAction:
+        d->addAttr(::new (S.Context) IBActionAttr());
+        break;
+      case AttributeList::AT_IBOutlet:
+        d->addAttr(::new (S.Context) IBOutletAttr());
+        break;
+      default:
+        llvm_unreachable("Invalid IB attribute");
+    }
+  }
   else
-    S.Diag(Attr.getLoc(), diag::err_attribute_iboutlet);
+    S.Diag(Attr.getLoc(), diag::err_attribute_ib) << Attr.getName();
 }
 
 static void HandleNonNullAttr(Decl *d, const AttributeList &Attr, Sema &S) {
@@ -1729,7 +1739,8 @@ static void ProcessDeclAttribute(Scope *scope, Decl *D,
     // FIXME: Try to deal with other __declspec attributes!
     return;
   switch (Attr.getKind()) {
-  case AttributeList::AT_IBOutlet:    HandleIBOutletAttr  (D, Attr, S); break;
+  case AttributeList::AT_IBAction:
+  case AttributeList::AT_IBOutlet:    HandleIBAttr          (D, Attr, S); break;
   case AttributeList::AT_address_space:
   case AttributeList::AT_objc_gc:
   case AttributeList::AT_vector_size: