Small problem in gen_lowpart_common in emit_rtl.c

[Jeffrey A Law]

  In message < 199709021445.QAA23459@lslsun17.epfl.ch >you write:
  > I've had problems when GCC was taking a subword of some larger data.
  > I have a big endian machine, with a word unit of 8 bits.  I think I've
  > tracked down the problem to the gen_lowpart_common function in emit_rtl.c
  > which forgets which particular sub-word we are interested in.  Below is my
  > proposed fix,
I believe your patch is probably correct.  However, can you provide
a little more info so that I can understand exactly what's happening?

Specifically, what are MODE and X upon entry and what is the basic word size
on your machine?

Thanks,
jeff