From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen L Moshier <moshier@mediaone.net>
To: Richard Henderson <rth@cygnus.com>
Cc: law@cygnus.com, egcs@cygnus.com
Subject: Re: Reassociation
Date: Sun, 20 Dec 1998 16:22:00 -0000
Message-id: <Pine.LNX.4.05.9812201916430.32022-100000@moshier.ne.mediaone.net>
References: <19981220153620.A24213@dot.cygnus.com>
X-SW-Source: 1998-12/msg00795.html

On Sun, 20 Dec 1998, Richard Henderson wrote:

> No, because that looses on ((a*b)*c)*d. 
> 
> We must add something to the tree.  There is no way to determine
> where the parentheses were.

Yes, I see you're right.  No way to tell whether the source program
had those particular parentheses or omitted them.  They generate the
same rtl as a*b*c*d.