patch: alpha haifa abort

[David Edelsohn]

>>>>> John Carr writes:

John> I was thinking about adding a new builtin function and a new rtl code.
John> So, for example, one might have after macro expansion

John> int x = __load_big_endian(ptr);

John> which became

John> (set (reg x) (swap (mem (reg ptr))))

	Don't you mean something like:

	int x = __load_swap_endian(ptr);

or do you want both __load_big_endian() and __load_little_endian() with
GCC creating a no-op load for the case matching the target's
byte-endianness? 

David