Index: include/clang/Parse/AttributeList.h
===================================================================
--- include/clang/Parse/AttributeList.h	(revision 110184)
+++ include/clang/Parse/AttributeList.h	(working copy)
@@ -111,6 +111,7 @@
     AT_unavailable,
     AT_unused,
     AT_used,
+    AT_vecreturn,     // PS3 PPU-specific.
     AT_vector_size,
     AT_visibility,
     AT_warn_unused_result,
Index: lib/Sema/SemaDeclAttr.cpp
===================================================================
--- lib/Sema/SemaDeclAttr.cpp	(revision 110184)
+++ lib/Sema/SemaDeclAttr.cpp	(working copy)
@@ -687,6 +687,34 @@
     d->addAttr(::new (S.Context) AnalyzerNoReturnAttr());
 }
 
+// PS3 PPU-specific.
+static void HandleVecReturnAttr(Decl *d, const AttributeList &Attr,
+                                       Sema &S) {
+  // FIXME - Need implementation.
+/*
+  Returning a Vector Class in Registers
+  
+  According to the PPU ABI specifications, a class with a single member of vector type is returned in
+  memory when used as the return value of a function. This results in inefficient code when implementing
+  vector classes. To return the value in a single vector register, add the vecreturn attribute to the class
+  definition. This attribute is also applicable to struct types.
+  
+  Example:
+  
+  struct Vector
+  {
+    __vector float xyzw;
+  } __attribute__((vecreturn));
+  
+  Vector Add(Vector lhs, Vector rhs)
+  {
+    Vector result;
+    result.xyzw = vec_add(lhs.xyzw, rhs.xyzw);
+    return result; // This will be returned in a register
+  }
+*/
+}
+
 static void HandleDependencyAttr(Decl *d, const AttributeList &Attr, Sema &S) {
   if (!isFunctionOrMethod(d) && !isa<ParmVarDecl>(d)) {
     S.Diag(Attr.getLoc(), diag::err_attribute_wrong_decl_type)
@@ -2181,6 +2209,7 @@
   case AttributeList::AT_noreturn:    HandleNoReturnAttr    (D, Attr, S); break;
   case AttributeList::AT_nothrow:     HandleNothrowAttr     (D, Attr, S); break;
   case AttributeList::AT_override:    HandleOverrideAttr    (D, Attr, S); break;
+  case AttributeList::AT_vecreturn:   HandleVecReturnAttr   (D, Attr, S); break;
 
   // Checker-specific.
   case AttributeList::AT_ns_returns_not_retained:
Index: lib/Parse/AttributeList.cpp
===================================================================
--- lib/Parse/AttributeList.cpp	(revision 110184)
+++ lib/Parse/AttributeList.cpp	(working copy)
@@ -100,6 +100,7 @@
     .Case("format_arg", AT_format_arg)
     .Case("gnu_inline", AT_gnu_inline)
     .Case("weak_import", AT_weak_import)
+    .Case("vecreturn", AT_vecreturn)
     .Case("vector_size", AT_vector_size)
     .Case("constructor", AT_constructor)
     .Case("unavailable", AT_unavailable)