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Re: [trunk] Addition to subreg section of rtl.text.
Paolo Bonzini <email@example.com> writes:
>> I think one reason is that allowing zero_extracts of multi-word modes is
>> (like this subreg thing) a little hard to pin down. What happens when
>> WORDS_BIG_ENDIAN && !BYTES_BIG_ENDIAN
> Unless I had my grep wrong, the only such machines to do this are PDP11
> and ARM with special flags (-mbig-endian -mwords-little-endian) that
> were "for backward compatibility with older versions of GCC" in 1999 .
> So, is this special case worth keeping?
Good question. Unless I'm missing something, PDP11 isn't yet on the
deprecrated list. Is that right? If so, I suppose we can't remove
it before 4.5 at the earliest.