The IA-64 back end supports the following variable attribute:
On IA-64, use this attribute to set the addressability of an object. At present, the only supported identifier for model-name is
small, indicating addressability via “small” (22-bit) addresses (so that their addresses can be loaded with the
addl instruction). Caveat: such addressing is by definition not position independent and hence this attribute must not be used for objects defined by shared libraries.