reload displacement optimization

[Jeffrey A Law]

  In message < 19980404183803.07177@dot.cygnus.com >you write:
  > On Thu, Apr 02, 1998 at 11:50:05PM -0700, Jeffrey A Law wrote:
  > > Note the documentation says nothing about the need to call push_reload
  > > on the address you actually want reloaded.
  > 
  > The documentation said that "you may" call push_reload to get things
  > done.  I've bumped push_reload up to the top of the list to make it
  > more obvious, and strengthened the wording to "should".
  > 
  > > I also vaguely remember a question about any structure sharing
  > > assumptions made by LEGITIMIZE_RELOAD_ADDRESS.  Do you need to
  > > call copy_rtx on the address?
  > 
  > The matter of structure shareing is discussed quite clearly, I think,
  > immediately after where it discusses push_reload.  Copy_rtx is mentioned
  > two paragraphs below as something that you might want to use.
I must have missed both of them.  Of course that's what I get for
reading the *&(@#$ texi source directly. :-)

jeff