diff --git a/include/ChangeLog b/include/ChangeLog
index c96d35855..2a19c6133 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2011-02-08  Ulrich Weigand  <uweigand@de.ibm.com>
+
+	* dwarf2.h (enum dwarf_calling_convention): Add DW_CC_GDB_IBM_OpenCL.
+
 2011-01-12  Iain Sandoe  <iains@gcc.gnu.org>
 
 	* dwarf2.h: Update value for DW_AT_hi_user.
diff --git a/include/dwarf2.h b/include/dwarf2.h
index ad00aac09..7729ad86d 100644
--- a/include/dwarf2.h
+++ b/include/dwarf2.h
@@ -754,7 +754,15 @@ enum dwarf_calling_convention
     DW_CC_hi_user = 0xff,
 
     DW_CC_GNU_renesas_sh = 0x40,
-    DW_CC_GNU_borland_fastcall_i386 = 0x41
+    DW_CC_GNU_borland_fastcall_i386 = 0x41,
+
+    /* This DW_CC_ value is not currently generated by any toolchain.  It is
+       used internally to GDB to indicate OpenCL C functions that have been
+       compiled with the IBM XL C for OpenCL compiler and use a non-platform
+       calling convention for passing OpenCL C vector types.  This value may
+       be changed freely as long as it does not conflict with any other DW_CC_
+       value defined here.  */
+    DW_CC_GDB_IBM_OpenCL = 0xff
   };
 
 /* Inline attribute.  */